Gyarados EX

{1},{t}: Flip a coin until you get tails. For each
heads you can play a Land that provides {u}
from your deck. Shuffle your deck afterward.
{2}{u}{u}: This creature is 13/18 until end of turn.
And all other creatures you control are dealed 1
damage.
Weakness to {w}(Damage that it is done to this creature by {w} cards are double)
Retreat {4}({4}, return this card to your hand)