Forgotten Spire

Forgotten Spire enters the battlefield with X
ice tokens on it.

{2}: Add an ice counter to Forgotten Spire.

When Forgotten Spire has 10 ice counters on
it, sacrifice it. If you do, create Dusk, a
legendary 12/12 red Avatar creature token
with hexproof, reach and "This gains +1/+1
at the start of your turn."