Mox is analysing…
Thief of Sanitycard_advantage$0.84Steals an opponent’s card and lets you cast it, with the same Dimir-ish 'use the opponent's resources' gameplay. It is slower and on a creature, but very close in play pattern.Discovery // Dispersalcard_draw$0.14Discovery gives a cheap look/explore-style card selection that can dig for interaction, while Dispersal interacts with an opponent’s board. Not a direct steal effect, but it occupies a similar UB value slot.Praetor's Graspcard_advantage$10.13Exiles a card from an opponent’s library and lets you cast it, which is the closest direct analog to Siphon Insight. It is sorcery-speed and more expensive, but much more powerful.Stolen Goodscard_advantage$0.16Also exiles a card from an opponent’s library and gives you access to it later. It’s far less efficient, but it matches the 'steal from library' theme closely.Mind's Dilationcard_advantage$11.24Repeatedly exiles and lets you cast cards off opponents’ libraries, creating a similar value-stealing engine. It is much slower and higher cost, but fills the same gameplay niche.Gonti, Lord of Luxurycard_advantage$0.30Exiles the top cards of an opponent’s library and gives you one to cast, which is very close in function to Siphon Insight. It’s creature-based and more expensive, but a strong parallel.Kess, Dissident Magecard_advantage$5.17Doesn’t steal opponent cards, but provides a similar Dimir flashback-style replay of spells from your graveyard. If you want the same 'virtual card advantage' role, Kess is a strong adjacent option.Mission Briefingcard_advantage$0.31A UB-flavored instant that reuses a spell from your graveyard while surveilling, giving similar card-selection and instant-speed value. It’s not theft, but it occupies the same cheap two-mana utility slot.
