During either player's turn, when your opponent activates a card or effect that would destroy a "Z-Fighter" monster(s) you control: you can negate that activation, and if you do, destroy it, then Special Summon this card
SE Secret Rare Maiden with Eyes of Blue X LIGHT Level 1 [ SpellcasterTunerEffect ] ATK 0 DEF 0 When a card or effect is activated that targets this card (Quick Effect): You can Special Summon 1 "Blue-Eyes White Dragon" from your hand, Deck, or GY
The Power of the Elements booster set contains 100 new cards: 50 Common Cards, 26 Super Rare Cards, 14 Ultra Rare Cards, 10 Secret Rare Cards
if cards always have to be where they trigger in order to activate, why would that clause be necessary at all
Ultimate Great Insect EARTH 9 [ Insect / Fusion / Effect ] 1 Level 8 Insect monster + 1 Level 7 Insect monster You can only Special Summon "Ultimate Great Insect" once per turn
My Verdict: Duelists looking to play a slower control game and outgrind their foe with raw card advantage should consider Lovely Labrynth of the Silver Castle as their centerpiece