Emperor of Bones [Modern Horizons 3] Viashino Warlock Set: Fallout Type: Sorcery Rarity:

Set: Fallout Type: Sorcery Rarity: Rare Cost: {8}{R} This spell costs {1} less to cast for each creature on the battlefield

and it encompasses all others

The most sensational plays send everyone home breathless

gain control of target creature an opponent controls with power less than Yasova Dragonclaw's power until end of turn

Emperor of Bones [Modern Horizons 3] Viashino Warlock Set: Fallout Type: Sorcery Rarity:Set: Modern Horizons 3 Type: Creature Skeleton Noble Rarity: Rare Cost: {1}{B} At the beginning of combat on your turn, exile up to one target card from a graveyard. {1}{B}: Adapt 2. Whenever one or more +1 +1 counters are put on Emperor of Bones, put a creature card exiled with Emperor of Bones onto the battlefield under your control with a finality counter on it. It gains haste. Sacrifice it at the beginning of the next end step.