Mat'Selesnya

Planeswalker spells can't be the target of spells or abilities.
Whenever a planeswalker enters the battlefield,
it's controller scry's 1 and put a soul counter on
Mat'Selesnya.
When Mat'Selesnya has 7 or more soul counters
on it, you may sacrifice it. If you do, up to three creatures you control gain indestructible for the
rest of the game.