Angel, the Angel Devil

{x}{t}: Give target creature with X or more
toughness X number of -0/-1 counters. Angel,
the Angel Devil gains X number of Lifespan
counters.
Once per turn, you may remove X number of Lifespan counters to search your library for an equipment card with mana value and equipment
cost X or less, put it onto the battlefield equipped
to Angel, the Angel Devil, then shuffle.