Fauir, Darkwoods Guardian

+1: you may sacrifice a creature. If you do, put loyalty counters on Fauir equal to its toughness and you gain life equal to its power.
-X: Create a X/X spirit with trample and flying.
-7: you get an emblem with: "Whenever a creature dies, you gain X life and target player loses X life, where X is its toughness."