This spell is the latest in a long line of punisher effects that ask your opponent to make a choice they can either give you something tangible like cards or they can choose to let the punisher card hurt them directly instead
Number Five Bant Control | Reid Duke, SCG Invitational Los Angeles Creatures (8) 1 Restoration Angel 3 Augur of Bolas 4 Thragtusk Instants (15) 3 Azorius Charm 4 Dissipate 4 Sphinx's Revelation 4 Think Twice Sorceries (9) 1 Amass the Components 1 Terminus 3 Supreme Verdict 4 Farseek Enchantments (2) 1 Detention Sphere 1 Rest in Peace Lands (26) 2 Island 1 Alchemist's Refuge 2 Nephalia Drownyard 2 Overgrown Tomb 3 Temple Garden 4 Glacial Fortress 4 Hallowed Fountain 4 Hinterland Harbor 4 Sunpetal Grove Sideboard (15) 1 Jace, Memory Adept 2 Negate 2 Dispel 1 Silklash Spider 2 Rhox Faithmender 1 Pithing Needle 2 Terminus 1 Azorius Charm 1 Rest in Peace 1 Detention Sphere 1 Restoration Angel I don't even know what to say about Thragtusk, other than if you only looked up the Reid Duke decks with Thragtusk you'd have quite a buffet of different cool strategies
Cast this on Dockside Extortionist from flashback and, well, lets just say if there are dry eyes around you at the end of that stunt then you might as well quit MTG
The Fusion spell itself, Shaddoll Fusion , is adaptable in that if an opponent has summoned a monster from their extra deck, you can use a monster from your deck as well as hand and field as tribute
He attempts to tap out to Parallax Tide my lands and I have a Naturalize in hand to get my lands back
