It might not be worth your time for the $50 profit, and it is definitely far less attractive than two Volcanic Islands for the same price
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Ravager of the Fells
Exact ratios can vary by case
Vrondiss, Rage of Ancients Vrondiss, Rage of Ancients is a total melting pot of the most random stuff you can imagine
Attaching this to Yshtola and then casting any spell with mana value 3 or greater will result in damage to all opponents, and then a card draw for each opponent that was damaged
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