Dredge Balor of Shieldren

Dredge Balor is Indestructible while blocking
Dredge Balor may block 2 creatures
At the beginning of an opponents declare blockers phase.
Target opponent may gain control of Dredge Balor
until end of turn.
If they do Exile the top card of that player's library.
The owner of Dredge Balor may cast that card
until the end of their next turn if they do they pay
life equal to that cards converted mana cost.