Sparks, General's Attache

Assemble the Team -
{3}: Look at the top five cards of your library,
choose a Legendary Creature from among
them and put it into your hand, put the rest at the
bottom of your library in any order.
Rapid Deployment -
{x}{2}{t}: Choose a Legendary Creature in your
hand, X is equal to that creatures casting cost.
Put that creature from your hand, onto the
battlefield.