Riverchurn Monument (Gold Foil) Aetherdrift Trample Cultivator Colossus's power and

Trample Cultivator Colossus's power and toughness are each equal to the number of lands you control

you may remove a hit counter from a card that player owns in exile

This spell can't be countered

Each creature that's attacking one of your opponents has trample

you may draw a card and proliferate

Riverchurn Monument (Gold Foil) Aetherdrift Trample Cultivator Colossus's power and{1}, {T}: Any number of target players each mill two cards. (Each of them puts the top two cards of their library into their graveyard.) Exhaust {2}{U}{U}, {T}: Any number of target players each mill cards equal to the number of cards in their graveyard. (Activate each exhaust ability only once.)