Forbidden Droplet [ROTD-EN065] Secret Rare SM38 you can negate the Summon

you can negate the Summon of a monster and destroy it

or 1 card that specifically lists the card "Toon World" in its text

Set: 2009 Collectors Tin Card type: Effect Monster Rarity: Secret Rare Attack: 2900 Defense: 2400 There can only be 1 face-up Earthbound Immortal monster on the field

Set: Forbidden Legacy Card type: Effect Monster Rarity: Secret Rare Attack: 300 Defense: 200 Discard this card from your hand

Set: Dimension of Chaos Card type: Synchro/Effect Monster Rarity: Super Rare Attack: 3000 Defense: 2000 1 Aqua-Type Tuner + 1 or more non-Tuner monsters When this card is Synchro Summoned: You can target cards your opponent controls

Forbidden Droplet [ROTD-EN065] Secret Rare SM38 you can negate the SummonSet: Rise of the Duelist Card type: Quick Play Spell Rarity: Secret Rare Send any number of other cards from your hand and or field to the GY; choose that many Effect Monsters your opponent controls, and until the end of this turn, their ATK is halved, also their effects are negated. In response to this card's activation, your opponent cannot activate cards, or the effects of cards, with the same original type (Monster Spell Trap) as the cards sent to