Exeggcute (33/112) [EX: FireRed & LeafGreen] Yu-Gi-Oh! Set: Tactical Evolution Card type:

Set: Tactical Evolution Card type: Effect Monster Rarity: Ultimate Rare Attack: 0 Defense: 0 This card cannot be Special Summoned by monster Effect Monster's effect

you can activate it once as this card's effect

When this card is destroyed by your opponent's card and sent to the Graveyard: You can Special Summon 1 Spellcaster-Type monster from your hand or Deck whose Level is less than or equal to the number of "Spellbook" Spell Cards in your Graveyard

also your opponent's cards and effects cannot activate when a monster is Fusion Summoned this way

Exeggcute (33/112) [EX: FireRed & LeafGreen] Yu-Gi-Oh! Set: Tactical Evolution Card type:Set: EX: FireRed & LeafGreen Type: Psychic Rarity: Uncommon Retreat cost: Colorless