Clystic-bound Stone

Indestructable, Flash

This artifact enters tapped.
Opponent's spells or abilities can't cause you to sacrifice permanents.
Creatures you control enter with a shield counter on them.
If a creature you control has a counter on it, it gains Lifelink.

{x}, {t}: Exile Target X creature tokens.
{1}{w}{w}, {t}: Exile target planeswalker.