Assertion: ability | /r/HasProperty | activated
Facets:
Source sentences:
text: If, at any point during the activation of an ability, a player is unable to comply with any of those steps, the activation is illegal; the game returns to the moment before that ability started to be activated (see rule 723, “Handling Illegal Actions”).
text: If the ability instructs its controller and another player to do something at the same time as the ability is being activated, the ability’s controller goes first, then the other player.
text: Once a player begins to activate a mana ability, that ability can’t be activated again until it has resolved.