Highspire Infusion

A pump spell normally exits combat empty-handed: one changed board, one fewer card, nothing carried forward. This one refuses to. Giant Growth set the green baseline for +3/+3 at a single mana, and a strict two-mana copy would be a quiet downgrade in rate. The energy on the back end is what reframes the trade, turning the combat trick into a deposit on a resource you spend elsewhere, so a single cast does two jobs. But the rider only pays out if the spell resolves, and that is the catch worth being precise about: this targets a single creature, so if your opponent removes that creature in response, the whole thing fizzles and you get nothing, no buff and no energy. A blown-out trick is still a blown-out trick. The energy is a reward for connecting, not a consolation prize for getting answered. The deeper conditional is conversion: energy is invisible unless your deck is built to spend it, and with no payoff you are simply paying a green tax for a stat boost. As an instant it keeps the ambush window every combat trick lives on, but it asks the deckbuilder to commit to a parallel economy before the secondary text earns its keep. Read alone, a slightly overpriced Giant Growth. Read inside an energy engine, a trick that pays its own freight, provided it lands.