Everdream

Splice is the mechanic that lets a card contribute to a spell without being spent, and this is the plainest possible demonstration of the trick: a cantrip that never has to be cast as a cantrip. The decision is between two casts, not a sequence. Pay to draw and it goes to the graveyard like any other instant; or hold it, reveal it as you cast some other instant or sorcery, pay the splice cost, and staple its draw onto that spell instead. The revealed card never leaves your hand when you splice, which is the structural detail the rate hides: the same physical card supplies the rider turn after turn. So long as you have three extra mana on top of whatever you are already casting, a removal spell also draws, a counterspell also draws, a burn spell also draws, and none of it consumes the attachment. That reusability is what sets splice apart from kicker or flashback, where the resource gets used up on cast: here the enabler stays in hand and only the mana is spent. The tax is what prices the loop, charging for the convenience of making any spell replace itself rather than giving it away. A single card read as small, but the design is doing something quieter, turning an otherwise dead draw into optional velocity that any instant or sorcery in the deck can carry.