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pokémon trading card game: mega evolution booster bundle Pokemon Striving to become stronger Pokémon TCG: Mega Evolution Booster
Description
49/102 Drowzee

Because you are forcing your opponent to sacrifice the targeted creature, it can remove just about any threat your opponents could play

It is written as Cruel Fundamental Principle and read as Cruel Ultimatum

I think there are two reasons: Using Waterfall instead of Horn Attack leads to the same result