Broadly, there are two types of counterspells in Magic: hard and soft. Hard counters stop spells in their tracks without any restrictions, while soft spells either only stop the spell temporarily, or have an option to bypass the counter
So you have to take caution when running this in a hybrid variant

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While this card and "Marshmallon" are face-up on your side of the field, your opponent cannot select a card other than "Marshmallon" as an attack target
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