Heartless Summoning
Enchantment
Creature spells you cast cost 
less to cast.
Creatures you control get -1/-1.
Old battlefields have no shortage of bodies, but the bodies are rarely intact.
Jodie Muir
Innistrad Remastered (INR)
• #309Rulings
Heartless Summoning’s first ability can only reduce the generic mana portion of a creature spell’s cost.
(wotc • 2025-01-24)
Rulings
Heartless Summoning’s first ability can only reduce the generic mana portion of a creature spell’s cost.
(wotc • 2025-01-24)