Frost,Indomitable Snowman

{u}{b},{t}: Sacrifice X creatures, X lands become snowlands.
Dismember {u/b}{u/b} ({u/b}{u/b}, {t}: Put a -1/-1 counter on target creature and create a 0/1 colorless Appendage creature token.)
Frost, Indomitable Snowman has power and toughness equal to all snowlands in play plus 1.
"Let it never be said serial killers, magical hats & winter make for a good combination of things...."