Dampen Thought

Instant - Arcane, 1U (2)
Target player puts the top four cards of his or her library into his or her graveyard.
Splice onto Arcane {1}{U} (As you play an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)¹
Illus. Arnie Swekel

Crystal Keep Rulings Summaries

• Note - Also see Instant Type for Arcane, Rule G19.23.
• Note - Also see Splice, Rule 502.40.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/8)	Champions of Kamigawa (Uncommon)