Every distinct wording since 2010, newest first.
June 7, 2024 · Modern Horizons 3
Some creatures with training have abilities that trigger when they train. “When this creature trains” means “When a resolving training ability puts one or more +1/+1 counters on this creature.”
November 19, 2021 · Innistrad: Crimson Vow
Some creatures with training have abilities that trigger when they train. “When this creature trains” means “When a resolving training ability puts a +1/+1 counter on this creature.”