Cieran Land, Eastern Neira

Cieran Land, Eastern Neira is a plain.
{t}{s}{s}: Put a snow counter on target permanent
you control. Everytime you tap a permanent with
a snow counter on it for mana, you may exert it.
If you do so, all mana produced this way is snow
mana.
"The cold takes on anything. Join it, and you'll never
have to be alone again."
—Frostsense, Neiran duelist