Galvanic Arc

Bundling a burn spell into a permanent buff was the headline this Aura sold, and the split is what makes it more than a clumsy two-for-one. When it resolves it throws three damage anywhere it likes, which is the part that almost never touches the creature you just enchanted: point it at a blocker and leave first strike on your attacker, send it at a planeswalker or face and park the rider on whatever stays alive. The cost of that flexibility is structural and front-loaded. Because it has to enchant a creature, you need a legal target just to cast it, and an answer to that target in response makes the whole Aura fizzle. No resolution means no damage trigger, so the entire package vanishes rather than half of it: removing the enchant target at the right instant costs you the buff and the burn together. That fragility is the tax on the value, and it is the reason later refinements of the removal-plus-board-presence template moved away from Auras and toward bodies that bring their own removal stapled on. The first strike rider is cheap glue, turning a midsize attacker into something that trades up and wins races, but it was always the secondary draw. What players cast this for is the three damage that arrives the moment it lands, with the permanent buff as a bonus riding a creature that has to survive to keep it.