Thunderheads

Thunderheads (23) is a Blue Instant from Duel Decks: Izzet vs. Golgari (DDJ). It costs {2}{U} and has mana value 3. It is printed at Uncommon rarity. The one keyword in its text is Replicate. It is legal in Modern, Legacy, Vintage and Commander and 1 more format.

Duel Decks: Izzet vs. Golgari is a preconstructed deck product, released September 2012. Thunderheads has 2 other cards in the database, listed further down the page.

Replicate {2}{U} (When you cast this spell, copy it for each time you paid its replicate cost.) Create a 3/3 blue Weird creature token with defender and flying. Exile it at the beginning of the next end step.