Qala, Ajani's Pridemate

The name is the tell: this is Ajani's Pridemate promoted to command duty, and the promotion is more than flavor. The old uncommon grew fatter every time you gained life and stopped there; Qala takes the same lifegain-to-counter feedback loop and points it outward at the rest of your attackers. Every counter she accumulates becomes a +X/+0 anthem the turn she swings, so the lifegain build that used to just make one big cat now converts each lifegain event into a battlefield-wide combat step. The self-contained lifegain ability matters here because it means the engine never fully stalls: with no other lifegain effect on the table, Qala can still feed herself a counter each turn for a fixed cost, which turns the card from a payoff that needs support into a payoff that can bootstrap its own growth. What makes the design sharp is that lifegain pays out along two axes at once, one making Qala bigger and one making the swarm hit harder, and both cash in at the same moment she attacks. That collapses the classic lifegain-deck problem, where all your value is defensive and none of it closes, into a single attack trigger. The counters are the resource, the attack is the release valve, and the pay-to-gain button is the floor beneath both, ensuring the deck always has a way to keep the loop turning even when it draws nothing else.