I love swans such an awesome card but if i was to try and build a vintage deck i would just play it in a blue red control deck since its only 4 mana and it is a 4/3 flier which isnt a bad clock at all.
As far as your oath version goes you have way too many oath targets if your plan is to oath into swans have swans, niv-mizzet, and maybe 1 bsc as your only oath targets, other oath builds only run 2 or 3 targets your running 6 giving you 3 or 4 extra dead cards in your hand. Im also counting 37 non creature spells with no vampiric tutor, no time walk, and no ancestral recall. If you want to play this as oath i would advise going to morphling.de and using an oath list to get u started cutting a few cards for the combo pieces.
Oh damn, I forgot about Vamp and power blue! I guess that just goes to show how long it's been since I last built anything. I'll knock out Kozilek and Emrakul. However, just Niv feels subpar. Maybe just a blue green shell would be best. I'll try that out.