Urza's Filter

Artifact, 4 (4)
Multicolored spells cost up to {2} less to cast.¹
"It's a tool for aiding my other tools," explained Urza. "Now they'll work in harmony."
Illus. Dave Dorman

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Invasion (Rare)