The Scroobious Pip

Changeling

As long as you control a creature with first strike, creatures you control have double strike. The same is true for flying and double flying, vigilance and double vigilance, haste and double haste, menace and double menace, and trample and double trample.

"Chippetty Flip; Flippetty Chip;
My only name is the Scroobious Pip."
—Edward Lear