CardName: Icy Unwelcoming
Cost: {U}{U}
Type: Snow Instant
Pow/Tgh: /
Rules Text: Counter target creature or planeswalker spell.
Avalanche- If you cast another snow spell this turn you may
tap target creature.
Flavour Text:
Set/Rarity: temporary storage Common
Icy Unwelcoming
C
Snow Instant
Counter target creature or planeswalker spell.
Avalanche- If you cast another snow spell this turn you may tap target creature.
At so as not to be strictly better than Remove Soul and Essence Scatter.
This is the test for an avalanche mechanic, which rewards a player for playing multiple snow spells in a turn.