Haste
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Avalanche Riders enters, destroy target land.
Echo (During your next upkeep after this permanent comes under your control, pay its casting cost or sacrifice it.)
Avalanche Riders is unaffected by summoning sickness.
When Avalanche Riders comes into play, destroy target land.
--This card has no flavor text --
