Psychic Puppetry

Cast on its own, this is a Twiddle with a tax: tap or untap a single permanent for two mana, the kind of throwaway utility line that has been kicking around since the game's earliest sets. What changes the math is splice. The point was never to pay for a tap effect; it was to keep this in hand and reveal it as fuel for an Arcane spell, paying a single blue to staple the tap-or-untap rider onto something already heading for the stack. The window is the part worth study: splice is chosen during the casting process, after the Arcane spell is announced, so you bundle two effects into one cast and one resolution. That lets a marginal line ride along with a real one (untapping a blocker mid-combat, or freeing a permanent for a second activation), and it does so at a discount. Hard-casting runs ; the splice cost is just , so attaching the effect is cheaper than playing it alone. The pricing tells you exactly where this card is supposed to live: in your hand as a rider for an Arcane chain, not burned as a one-off. Read as a standalone instant, it is forgettable. Read as a one-mana attachment, it is the kind of low-value effect splice exists to make playable at all.