Radiation is an invisible tide that seeps into the bones of the land, changing it irrevocably.

Fallout

Inexorable Tide

Whenever you cast a spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Historic Anthology 2

"See how gratefully this world accepts our blessings."
—Jin-Gitaxias, Core Augur

Modern Masters 2015

Whenever you cast a spell, proliferate. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there.)