Thought Lash

Enchantment, 2UU (4)
Cumulative upkeep-Exile the top card of your library. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

When Thought Lash's cumulative upkeep isn't paid, exile all cards from your library.

Exile the top card of your library: Prevent the next 1 damage that would be dealt to you this turn.¹
Illus. Mark Tedin

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: If you don't pay Thought Lash's cumulative upkeep, you'll sacrifice Thought Lash as normal, then, when its triggered ability resolves, you'll exile all cards in your library.
• 10/1/2008: If your library has no cards in it, you can't activate the last ability.

Format Legality	Legal in Vintage, Legacy, MTGO Classic Banned in Extended, Standard
Printings (2/7)	Alliances (Rare) MTGO Masters Edition II (Rare)