Puck, the Spritelord

First Strike, Flash, Haste

Puck cannot be blocked by creatures without Doublestrike, First Strike, Flash, Haste, or Vigilance.

When Puck enters the battlefield under your control, create a copy of target Instant, Sorcery, or Enchantment, you may choose new targets for the copy. When Puck leaves the battlefield, exile that copy.