Shrike, Remnant of Kit Solent

Whenever you cast a Myr spell, create a 1/1
colorless Myr artifact creature token.
At the beginning of combat on your turn,
untap each Myr you control.
{w}{u}{b}{r}{g}, {t}: Put three +1/+1 counters
on each Myr you control. Activate only
during your turn.