Death Ring

Codex Entry:

 * Death Ring can only reduce a spell’s mana cost by 1mana. It can be used on two separate spells, but not twice on the same spell. Example: Graveyard casts a Zombie Minion during the Deployment Phase. Death Ring decreases the Minion’s mana cost by 1, to just 6 mana. Then, the Necromancer casts a Zombie Crawler. He uses Death Ring, a second time, to decrease the Crawler’s cost by 1, to just 3 mana.