Stalwart Oblisurvey

Stalwart Oblisurvey has vigilance as long as
you control a snow land.
{t}, {x}{s}: Put a +1/+1 counter on Stalwart
Oblisurvey. Scry X, then Chamber X. You
gain 1 life for each land put into the
sanctum this way. (Exile the bottom X cards
of your library to the sanctum. Any player can
cast spells and play lands in the sanctum.)