Sneaky Sprites

Flying
Invisibility (Magical Stealth)
Poison Darts: When battling creatures with Mana cost {2} or less, flip a coin. On Heads, flip again.
On Heads again, the creature is Tapped. On Tails, they suffer -1/-1 until end of turn.
Spritely Bolas: When Sprites Block a creature with Charge or Trample, they take no damage & said abilities don't function.