Chalice of the Void [Modern Masters] Nissa you may pay 4 life

you may pay 4 life rather than pay this spell's mana cost

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {3} You may play lands from your graveyard

Set: Saviors of Kamigawa Type: Legendary Creature — Moonfolk Monk Rarity: Rare Cost: {1}{U} Flying

and to seed

Set: Unlimited Edition Type: Artifact Rarity: Rare Cost: {3} {3}

Chalice of the Void [Modern Masters] Nissa you may pay 4 lifeSet: Modern Masters Type: Artifact Rarity: Rare Cost: {X}{X} Chalice of the Void enters the battlefield with X charge counters on it. Whenever a player casts a spell with mana value equal to the number of charge counters on Chalice of the Void, counter that spell.