how to kill an opponent easily

As an additional cost to cast this spell, pay X life. Target creature gets +X/+0 until end of turn.

: This creature deals 1 damage to any target.

, : Two target players exchange life totals.

When this artifact enters, destroy all Curses attached to you. You have hexproof. (You can't be the target of spells or abilities your opponents control, including Aura spells.)