Logic Knot

{X}{U}{U} · Instant · from $0.26

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

Counter target spell unless its controller pays {X}.

Format legality

Grixis Snapcaster Mage (Modern, 1.8% of the meta): 1 in the main deck of 14% of lists
Mono-Blue Faeries (Pauper, 1.8% of the meta): 1 in the main deck of 1% of lists
Izzet Murktide (Modern, 1.0% of the meta): 1 in the main deck of 2% of lists
Dimir Control (Modern, 0.3% of the meta): 1 in the main deck of 61% of lists
Izzet Wizards (Modern, 0.0% of the meta): 1 in the main deck of 40% of lists