Mental Misstep

If your opponent cannot counter this card, fill the board with seven 3/3 elks tapped and attacking.
The seven elks that enter the field gain
the following effects: lifelink, indestructible, everythingproof
(cannot be targeted or affected by anything except itself), protection from all colors.
"Wizards didn't see the elk invasion
and now they have paid the ultimate price."
~ 3 elks in a trenchcoat