Kled the Cantakerous

When Kled the Cantankerous enters the battlefield. create Skaarl a legendary 1/2 red Lizard creature
token with "As long as you control a Skaarl permanent, Kled the Cantankerous has indestructible."
Firststrike
{t}{r}: Create Skaarl a legendary 1/2 red Lizard creature token with "As long as you control a
Skaarl permanent, Kled the Cantankerous has indestructible." This ability can only be activated
if an opponent's creature has died this turn.