A) A triggered ability (such as training) can never be activated.
B) There is only one moment when that ability can trigger, and it has already passed by the time Adeline's power goes up.
Innistrad®: Crimson Vow Release Notes
Compiled by Jess Dunks
Document last modified October 21, 2021
General training notes:
• 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.
• 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.
Private Mod Note
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Why bother with mere rulings when so many answers can be found in the Rules?
So there are three creatures on my battlefield including hopeful initiate and [cards]Adeline, resplendent cathar[/card].
The hopeful initiate was 3/4, and it attacks with Adeline, resplendent cathar, will the training ability of hopeful initiate be activated as Adeline, resplendent cathar will create a human token and make itself 4/4. So hopeful initiate train because it attacks with a creature that has greater power than him?
Thank you!
A) A triggered ability (such as training) can never be activated.
B) There is only one moment when that ability can trigger, and it has already passed by the time Adeline's power goes up.