This is part of the colors identity in the games design
Simply gently place a threatening, mana-intensive Wizard or Vamp in your graveyard, then play this nifty little Wiz to get it back no questions asked
For many, the most obvious choice when it comes to your Hydra commander is Gargos, Vicious Watcher
There are 204 cards, not counting Secret Rares, on the way in the Into the Inklands set
(Equipment, Auras you control, and counters are modifications.) If the creature you control is an illegal target as Signature Slam tries to resolve but the creature you don't control is still a legal target, each modified creature you control (which may include the target creature you control if it's still on the battlefield) will still deal damage equal to its power to the creature you don't control
Her SALVAGE ability to reduce Shift cost is good, but the REPURPOSE ability to gain lore for recycling items is the kicker