Sword of Night and Flame

Equipped creature gets +2/+2 and has Vigilance.
You may cast spells that target equipped creature
as though they had Flash.
Whenever you cast a spell on another player's
turn, place a +1/+1 counter on equipped
creature, then double the number of +1/+1
counters on it.
Equip {1}, Exile an Instant or Sorcery card from
your hand.