Dark Depths

Legendary Snow Land
Dark Depths enters the battlefield with ten ice counters on it.
{3}: Remove an ice counter from Dark Depths.
When Dark Depths has no ice counters on it, sacrifice it. If you do, put an indestructible legendary 20/20 black Avatar creature token with flying named Marit Lage onto the battlefield.¹
Illus. Stephan Martiniere

Gatherer Card Rulings [Nov 2009]

• 7/15/2006: Dark Depths is a land with no mana ability.
• 7/15/2006: Dark Depths's last ability is a state trigger. It will not trigger again while the ability is on the stack, but if the ability is countered and Dark Depths is still on the battlefield with no ice counters on it, it will trigger again immediately.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/9)	Coldsnap (Rare)