Wik, Battlefield Assaulter

Changeling, Double Strike, Haste, Menace
When Wik, Battlefield Assaulter enters the battlefield, choose a creature type.
When Wik or another permanent of the chosen
type enters the battlefield under your control,
put a +1/+1 counter on it. If you control a commander, put three +1/+1 counters on that permanent instead.