Kahb's Fifth Hatchet

Equipped creature gets+2/+0 and has lifelink.
Whenever you cast an instant spell, you may
have Kahb's Fifth Hatchet deal 2 damage to you.
If you do, attach it to target creature you control.
At the beginning of your end step, if Kahb's
Fifth Hatchet is attached to a creature, unattach
it and it deals 2 damage to each player.