DethroneDethrone is a triggered ability. “Dethrone” means “Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on this creature.”
If a creature has multiple instances of dethrone, each triggers separately. (CR 702.105) (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1
counterTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1) on it.)
Other creatures you control have
dethroneDethrone is a triggered ability. “Dethrone” means “Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on this creature.”
If a creature has multiple instances of dethrone, each triggers separately. (CR 702.105).
Whenever a creature you control with a +1/+1
counterTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1) on it
diesIs put into a graveyard from the battlefield. (CR 700.4), return that card to the battlefield under your control at the beginning of the next end step.