Esprit vif

Unspent mana at end of turn carries over to the next turn, up to a maximum of 5.

Sharp Mind eliminates mana waste by preserving up to five unused mana points into the following turn. In practice, this is equivalent to reducing the cost of every card you play — each turn you start with more available mana than you would without it, allowing you to play more cards and generate more combo, damage, and resources.

As one third of the "mana trinity" alongside Chain Link and Mana Syphon, Sharp Mind enables the signature loop of sustained combo builds: carry surplus mana forward, convert it to combo via Mana Syphon, and prevent the combo from resetting via Chain Link. Each piece amplifies the others, and the trio together produces exponential growth in combo count over a long run.

Sharp Mind also benefits high-cost card builds. By accumulating mana across two or three turns, you can afford expensive cards that would otherwise require a dedicated low-cost build to support. This flexibility makes Sharp Mind one of the most universally applicable arcanas in the game.

The five-mana carryover cap means that more than five unspent mana is still lost. In practice this is rarely a limiting factor, but pairing Sharp Mind with Mana Syphon converts all excess beyond five into combo stacks, making even oversized surpluses valuable. Take Sharp Mind as early as possible — the more floors you play with it, the more cumulative value you extract from the carryover each turn.