改良
+1 Card
+1 Action
Trash a card from your hand. Gain a card costing exactly 1 Coin more than it.
Upgrade is an Action card from Intrigue. It is a cantrip trasher, since it gives +1 Card/+1 Action and can trash one card, letting you gain a card costing 1 Coin more. Since there are usually no cards costing 1 Coin, this is an effective way of trashing Coppers(Copper), as well as Upgrading Estates(Estate) into Silvers(Silver) or 3 Coin-cost Actions.