Anax and Cymede
Legendary Creature — Human Soldier
First strike, vigilance
Heroic — Whenever you cast a spell that targets Anax and Cymede, creatures you control get +1/+1 and gain trample until end of turn.
Akros's greatest heroes are also its royalty.
Illustrated by
The List#THS-186RareEnglishLegality
Rulings
Only creatures you control when the heroic ability resolves will get the bonuses. Creatures that come under your control later in the turn will not.
Heroic abilities will resolve before the spell that caused them to trigger.
Heroic abilities will trigger only once per spell, even if that spell targets the creature with the heroic ability multiple times.
Heroic abilities won’t trigger when a copy of a spell is created on the stack or when a spell’s targets are changed to include a creature with a heroic ability.