Eidolon of Calamity

Creatures you control have haste.
At the beginning of combat on your turn, flip a
coin. If you win the flip, your creatures gain
trample and double strike until end of turn. If
you lose the flip, Eidolon of Calamity deals 13
damage to each other creature.
Goblin 1: I thought Zacama was the Calamity!
Goblin 2: Stop yer yapping and run!