Iceberg

Iceberg enters with X ice counters on it.
{3}: Put an ice counter on Iceberg.
Remove an ice counter from Iceberg: Add {C}.

Masters Edition II

Iceberg comes into play with X ice counters on it.
{3}: Put an ice counter on Iceberg.
Remove an ice counter from Iceberg: Add {1} to your mana pool.

Coldsnap Theme Decks

Ice Age

When Iceberg comes into play, put X ice counters on it.
o3: Put an ice counter on Iceberg.
o0: Remove an ice counter from Iceberg to add one colorless mana to your mana pool. Play this ability as an interrupt.