Rockslide Ambush [Portal Three Kingdoms] UVS Games Polymorphine — You may have

Polymorphine — You may have Callidus Assassin enter the battlefield tapped as a copy of any creature on the battlefield

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where X is the number of descent counters on Descent into Avernus

Owlbear Avenger

if Wolverine dealt damage to another creature this turn

Rockslide Ambush [Portal Three Kingdoms] UVS Games Polymorphine — You may haveSet: Portal Three Kingdoms Type: Sorcery Rarity: Uncommon Cost: {1}{R} Rockslide Ambush deals damage to target creature equal to the number of Mountains you control.