Untap Endbringer during each other player's untap step.
: Endbringer deals 1 damage to target creature or player.
, : Target creature can't attack or block this turn.
, : Draw a card.
1/22/2016 Endbringer untaps at the same time as the active player’s permanents. You can’t choose to not untap it at that time.
1/22/2016 If an effect states that Endbringer doesn’t untap during your untap step, that effect won’t apply during another player’s untap step.
1/22/2016 Activating the second activated ability after a creature has legally been declared as an attacker or blocker won’t change or undo that attack or block.