Murktide Regent [Modern Horizons 2]

Murktide Regent [Modern Horizons 2]Set: Modern Horizons 2 Type: Creature Dragon Rarity: Mythic Cost: {5}{U}{U} Delve Flying Murktide Regent enters the battlefield with a +1 +1 counter on it for each instant and sorcery card exiled with it. Whenever an instant or sorcery card leaves your graveyard, put a +1 +1 counter on Murktide Regent.

It spilled the blood of one elder dragon

If Darigaaz Reincarnated would die

When Animate Dead leaves the battlefield

Sacrifice Mindslaver: You control target player during that player's next turn

Set: International Collectors’ Edition Type: Creature — Avatar Rarity: Rare Cost: {3}{G}{G}{G} As long as Gaea's Liege isn't attacking

"How easily your flames are quenched

Set: Ravnica Allegiance Type: Land — Mountain Forest Rarity: Rare ({T}: Add {R} or {G}

untap the creature

the Stronghold serves as the gathering place for the Cabal as their dark influence spreads from Urborg

Koth Type: Legendary Planeswalker — Venser Rarity: Mythic Cost: {3}{W}{U} +2: Exile target permanent you own

return up to that many target permanents that player controls to their owner's hand

but I didn't expect it from the building itself