Roark was a name meant for champions. But this kid was going to struggle with a backstory like that. He'd make a good Hrafn, take up a raven aspect or something. Bit too cordovan color to be black, but eh brown-necked ravens existed it'd work.
Loki thought back to the last several kids he'd had. Disasters, stallions, ogresses, giant monsters, small monsters that ate his guts, people...a human-sized one could be made to grow up fast if he really wanted. And probably wouldn't bite his entrails as much. Actually, skip the child rearing. 8 year olds tended to bite less, but you could never be too sure.
Many giants could take all manner of shapeshifted forms and drag abstract matters into reality, Loki included. So he became a sudden swarm of birds flowing through the church, and sought to grab the idea of 'a new life' that Roark was looking for. As possibility took shape, he saw the ideal was maybe less 'literal new life redesign and all' and more 'grow up fast to get away from parents'. Oo, that was an opportunity. Grow him up fast, futz with documentations, and be the distant father sponsoring him through college? Still edit a few other things so his mother would stay out of the picture, and...
Growth. He was abbreviating a lot of late-childhood and skipping teenagerhood here, so what kind of mental growth Loki could blend in was gonna bend his shiny new Raven to his will. But there was something pure about the guy who'd go and ask God Himself for a better life, so maybe nothing too drastic. Yet. He could do that later. Lure people into the bit and all that. And the choices falsified would do a lot for the physical body. Oh well, might as well do it fast and leave it uncertain for the young to decide.
"Forget your name, forget your skin, you'll pick them up later." cawed the swarm, and Roark was among Loki, a shuffling image caught up in the pews. Raven once-Roark was a second swarm of ravens among birds and divinity, and so the blood of a giant became his blood, and he grew strong. Only a little bit in overt strength, and that mostly because the richness of god-hunt dispelled the deprivations of poverty, but he did get much taller in a flowing almost-immediacy. He was a small giant, the sort of man that stood over six feet tall. In image he was robed first in discarded priesthood, then in blood, then in starlight, then in the sort of dark grey slacks and vest jacket that Loki thought vaguely popular, as both he and his adoptive father strove to decide somehow what happened of years could be skipped. A few birds fiddled with this-and-that vague conceptual parameter or fine detail of appearance, fussing about like many parents did when gussying up for some event or another. One gently combed back brown-red hair into a ponytail and another put a band for it. One bird stole another bird's black half-rimmed glasses and tossed them on Raven as sunglasses to frame golden-brown eyes, the sort one could wear indoors without suspicion rather than for visual clarity aid. Another swept his chin and left a five o'clock shadow just to be sure the age took. Another bird cartoonishly tossed a high school diploma into an opened mind temporarily literal, and began stamping off fake paperwork to leaven a few ledgers and well-remembered dreams. All in all it was a pretty blatantly borrowed look, but there were plenty of young men who looked vaguely similar so it wouldn't be hard to justify.
Loki took a similar shape as elder, flitting through Bjarkan-birch swirling leaves and flame effects to accentuate his entry as a silver fox of a man who could justifably be called 'dad' by this guy. Skin-image became shape and a sense of transition flooded surrounding reality, as avian swarms began to nest back into presented form like raindrops absorbed into puddles. Then in that church the young priest who had once been worried for children was a memory, though his worry wasn't just one.
"Happy birthday, son." Loki said, giving him an awkward hug as Raven's mind condensed from possibilities into probabilities. "Not the god you expected to answer, but I'm here for ya."
Glimmers of confusion and novelty at the whole 'turned into a bunch of birds and got older while being adopted' thing settled into recognition as Raven returned the hug. "Yeah dad, glad to have you."
The two settled back down on a pew by the altar, as Loki spun some nondescript magic in flecks of light between his hands.
"Son, you're a giantborn now." Loki explained. "If you wanna be, you can be. That's what giants are: try hard enough and we can become parts of the world, even when those parts are people, monsters, principles, things, what have you. That's magic that makes magic, without all that old faith and promise the little gods need to do their stuff. You play tricks, and what you need to play that trick happens, even if it's new magic. Only so much at a time though, and some organizations are easier to drift into or out of than others. But that's the trick to it, to what you are now: be, and shape will follow with all the tools, skills, documentation, that stuff. Be not, and you can decide what you want scrubbed and what you want left over. Magic grows more magic, and the metaphorical fuel tank refills pretty quick. Shift pretty freely, and if you keep it local or even just focused in how it's passed around you should be fine."
Loki blobbed up the magic sparkles into an image of a glowing white puppet on puppet strings. Raven nodded along.
"But it's not exactly secret some gods fall on the lazy side rather than the weak, and if trolled too hard they will be roused the way prayers don't always rouse." he continued somberly. "Don't try to fight that God guy He's too big for us. You'll know the attention when it's about to happen, heavier than any old law, so avoid it or leave before it gets bad. I'm sure you got intuition for this, I put it in there when you learned how to fly."
"Yeah, I got it." Raven confirmed, "I'm still fuzzy on what to really put in the whole 'I had a backstory where I grow up' bit but I'll avoid street fighting saints or anything if it's too obvious."
"That's my boy." Loki approved with a chuckle. "So this whole 'new life' thing was about getting away from your parents, so the adoptive parent isn't gonna be imposing. I've got your doc set up, enough money in a bank account you won't blitz through it paying off any new friends' student loans, and a few ideas where you could go to college. Maybe spread variant Norse paganism centered around your old man, so I can faith up my old gangs. Mwah."
Blowing an exaggerated fake kiss into his hand, Loki gave Raven Lokisson a wallet of relevant matters and a smartphone.
"Give it a shot, son. Just sort of will yourself into that ideal college student or young adult worker persona, and you'll be able to whisk yourself away to there too." he said, hoping this would be a good time. "There's a bit of me in you now, so roll me into your vision whenever you need another daddy and I'll handle the whole 'guy has a backstory' gimmick. Have a good one!"
Raven nodded and began concentrating, time and space slipping away in the way giants flew beyond its details.