![Mana Leak [Duel Decks: Speed vs. Cunning]](http://tothetablebgc.myshopify.com/cdn/shop/files/9128ec7b-5321-4810-b5e9-5d4c15644ecd.png?v=1776680106&width=900)
MTG Single
Mana Leak [Duel Decks: Speed vs. Cunning]
$1.34
| Set: | Duel Decks: Speed vs. Cunning |
| Type: | Instant |
| Rarity: | Common |
| Cost: | {1}{U} |
Counter target spell unless its controller pays {3}.
The fatal flaw in every plan is the assumption that you know more than your enemy.