Creature tokens you control have training. (Whenever a creature token you control attacks with another creature with greater power, put a +1/+1 counter on that token.)
Blind Betrayal — Sacrifice another creature: Elder Arthur Maxson gains indestructible until end of turn.
Once a creature’s training ability has triggered, destroying the other attacking creature or reducing its power won’t stop the creature with training from getting a +1/+1 counter.
8 Mar 2024
A creature’s training ability triggers only when both that creature and a creature with greater power are declared as attackers. Increasing a creature’s power after attackers are declared won’t cause a training ability to trigger.