Felisa, Fang of Silverquill

Mentor was built to reward attacking with a mixed board: the bigger creature swings, drops a +1/+1 counter on a smaller attacker, and the whole team creeps upward over the course of a game. What sits on top of that keyword here is a payoff for losing the very creatures the counters accumulate on. Every mentored body, every one-drop that grew, every attacker that picked up a counter from any source becomes a stockpile of flying Inklings the moment it dies, and the payout scales exactly to how many counters it was carrying. That closes a loop Mentor never had on its own: the keyword built the counters, but nothing before rewarded the death of the creature that held them. Aggression and sacrifice value now point the same direction, so trading in combat, feeding a sacrifice outlet, or eating a board wipe all convert counters into an evasive army rather than surrendering them. The nontoken restriction stops the engine from cannibalizing its own output: the 2/1 Inklings can die all day without triggering anything, so the value has to come from real creatures you invested counters into. This is the rare two-part legendary whose halves read as the same plan forward and backward: a counter-distributing attacker on the front end, a death payoff on the back, with the flying body tying the aggression to the reward it eventually cashes in.