Flash (You may cast this spell any time you could cast an instant.)
You may cast colorless spells as though they had
flash (You may cast this spell any time you could cast an instant.).
Whenever you cast a colorless spell, until end of turn, Skittering Cicada gains
trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) and gets +X/+X, where X is that spell's mana value.