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Once per turn, you can discard 1 card to Special Summon 1 Level 4 or lower "Moyufutsusa" monster from your Deck

One Spell from his lineup that can get up to some mischief is Mimicat

(3) If a monster is Special Summoned from the GY, or if a monster effect is activated in the GY: You can target 1 other face-up monster on the field

SR Super Rare CR COLLECTOR'S RARE Limited Limited Maliss Dormouse X DARK Level 3 [ CyberseEffect ] ATK 900 DEF 300 "Maliss" Link Monsters that point to this card cannot be destroyed by card effects

Notably, Prank-Kids and Magical Musketeers could benefit greatly from having their Link monsters resolve