Hidi'Zekyll vas Nedas

Noncombatant (This creature cannot attack.)
Whenever damage is prevented, create Data.
Whenever you sacrifice a Data, choose one —
• Tap target nonland permanent.
• Draw a card.
• Target creature gets -2/-2 until end of turn.
Data can still be sacrificed if this creature is removed.
—
"...I will have your back, if you let me."