Hero Rush

When Hero Rush enters the battlefield, you
may select up to {x} legendary creatures or
planeswalkers you own from outside the game
and put them onto the battlefield. Creatures
entering the battlefield this way gets a +1/+1
counter. Planeswalkers entering the battlefield
this way get one extra loyalty.
Legendary creatures you control have haste
and first strike. Legendary planeswalkers you
control may cast their abilities anytime you
can cast an instant.