Heartless Summoning [Innistrad] Nightmare Horror and you may spend mana

and you may spend mana as though it were mana of any type to cast those spells

the sustaining sun

" —Vuliev of the Ghost Council

Set: Ixalan Type: Creature — Dryad Rarity: Rare Cost: {G} When Old-Growth Dryads enters the battlefield

instead Lightning Surge deals 6 damage to that permanent or player and the damage can't be prevented

Heartless Summoning [Innistrad] Nightmare Horror and you may spend manaSet: Innistrad Type: Enchantment Rarity: Rare Cost: {1}{B} Creature spells you cast cost {2} less to cast. Creatures you control get 1 1. "They won't be winning any beauty pageants, but they'll do the trick." Enslow, ghoulcaller of Nephalia