Trial of Chaos

Enchant creature.
When Trial of Chaos enters, tap enchanted creature and put five stun counters on it.

{w/u}{u/b}{b/r}{r/g}{g/w}: Remove all stun counters from enchanted creature and untap it.

Enchanted creature has +1/+1 and Myriad.
If there is only one opponent when enchanted creature attacks, it gets Double strike this turn.