The beauty of design is that not all of them are just obvious power-monsters to jam in, but cards that youll need to work with a little more to get the most out of

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The Threat Of Poison Poison counters end the game early
It can come down and immediately trigger at least two landfall proliferates the turn it is played (and potentially more, if you sequence correctly)
Vindicate / Utter End / Anguished Unmaking Ah yes, removal
Denying players the fundamental resources needed to play the game isnt very fun, after all, which has led Wizards to print fewer and fewer cards that do so