Gewalthaufen

Multikicker {r/w} (You may pay an additional {r/w} any number
of times as you cast this spell.)

First strike, reach

When Gewalthaufen enters the battlefield, put a panic
counter on target creature for each time it was kicked.
(Creatures with panic counters on them can't attack or
block, and their activated abilities can't be activated.
At the beginning of your next turns end step, remove
all panic counters from creatures.)

“Enemies falter before an iron Wall of Will.