Griffin Aerie
The threshold does the whole strategic job here: three life in a single turn, checked at your end step, and the payoff is a recurring flyer engine off a two-mana enchantment. That number is chosen carefully. A single small lifegain trigger will not clear it, so the card asks for a deck built to gain life in chunks (a Soul Warden line feeding creatures, a lifelink attacker connecting, a burst-lifegain spell), and it rewards you for hitting the bar every turn rather than once. The enchantment sits outside the combat math entirely: it builds a board while you are busy stabilizing, converting the incidental life you were gaining anyway into a clock that grinds without asking you to spend more mana or cards. It belongs to the lineage of lifegain-matters enablers that turn a defensive resource into pressure, sitting alongside effects like Ajani's Pridemate that scale off the same trigger but bank the value differently: the Pridemate grows one body, this widens the board with fresh flyers each end step. The end-step timing also means the count resets cleanly every turn, so there is no storing progress; you either meet the threshold this turn or you do not, which keeps the engine honest and makes sequencing your lifegain within a single turn the real skill it tests.
