Gwaihir, Greatest of the Eagles

The two abilities point in opposite directions, and reconciling them is the whole build. The attack trigger is an aggressive tool: it grants flying to a creature you're already swinging with, pushing evasion onto a ground-bound army for one big turn. The end-step trigger asks something else entirely, a lifegain payoff wanting you to gain three or more life across the turn to spawn a Bird that copies the evasion-granting attack clause. On paper these are a combat card and a lifegain card sharing a slot, and the tension is that flooding the board with fliers wants a wide attack while gaining life on a schedule wants incidental drain and soul-warden effects that don't obviously fit an aggressive shell. Where the design coheres is in the token snowball: each 3/3 Bird brings its own flying-granting attack trigger, so a deck that reliably clears the lifegain threshold turns a single flier into an evasion engine that hands the entire team over the top of a stalled board. The lifegain clause is what keeps the token generation from being free, gating the payoff behind an actual archetype commitment rather than just attacking. In mono-white this reads as a bridge between two of white's oldest strategies, the go-wide fliers deck and the lifegain-matters deck, and the play pattern rewards finding cards that satisfy both at once rather than picking a lane.