Guerrilla Warfare

Creatures you control have haste.
Whenever a creature you control attacks, it gets
+1/+0 and gains menace until end of turn. Return
that creature to its owner's hand at the beginning
of the next end step.
"They fell upon us like wolves, sowing chaos in the
ranks then disappearing into the trees and mist as
quickly as they would strike."
Survivor of Legin XII, on the Hibernians