"Finding a true heartstone is even harder than finding a true heart."
—Hanna, *Weatherlight* navigator

The List

Heartstone

Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

"Finding a true heartstone is even harder than finding a true heart."
—Hanna

Premium Deck Series: Slivers

Activated abilities of creatures cost {1} less to activate. This effect can't reduce the amount of mana an ability costs to activate to less than one mana.

Stronghold

The cost of each creature ability requiring an activation cost is reduced by o1. This cannot reduce an ability's generic mana cost to less then o1.