Affinity
This ability is written Affinity for (quality). A card with affinity costs 1 generic mana less to cast for each permanent with that quality under the caster's control. For instance, a Frogmite, which is an artifact creature that costs 4 generic mana and has 'Affinity for artifacts', would be free if the player casting it controls four or more artifacts, whereas Thoughtcast, a sorcery with a printed cost of 4 generic mana and 1 blue mana, will cost a single blue mana regardless of whether its caster controls four or five (or more) artifacts. Affinity appeared throughout the Mirrodin block, usually for artifacts. A cycle of five cards in Darksteel had affinity for each of the basic land types.
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Famous quotes containing the word affinity:
“This is of the loon—I do not mean its laugh, but its looning,—is a long-drawn call, as it were, sometimes singularly human to my ear,—hoo-hoo-ooooo, like the hallooing of a man on a very high key, having thrown his voice into his head. I have heard a sound exactly like it when breathing heavily through my own nostrils, half awake at ten at night, suggesting my affinity to the loon; as if its language were but a dialect of my own, after all.”
—Henry David Thoreau (1817–1862)