Do bird tokens that die (and are put in graveyard before they vanish) put feather counters on Soulcatchers' Aerie or do birds need to stay in the graveyard to gain a feather
Mirari's Wake sets and printings - MTG Assist
Soulcatchers' Aerie | Judgment | Magic Madhouse
Miscellaneous: My Magic: the Gathering decks! | Idle Remorse