MScore: 6.2/10
Grab the Reins
Instantuncommon
Choose one —
• Until end of turn, you gain control of target creature and it gains haste.
• Sacrifice a creature. Grab the Reins deals damage equal to that creature's power to any target.
Entwine 
(Choose both if you pay the entwine cost.)
Illustrated by Michael Sutfin · Mirrodin · #95
Rulings for Grab the Reins
3
2004-12-01
If you pay the entwine cost, you can sacrifice the creature you gain control of with Grab the Reins.
2004-12-01
If you choose the “sacrifice a creature” mode, you choose the target of the damage on announcement, but don’t choose what to sacrifice until resolution. You must sacrifice a creature when Grab the Reins resolves, even if you don’t want to. If you don’t control any creatures at that time, Grab the Reins deals no damage.
2004-12-01
If you cast this with Entwine, you don’t get priority in the middle of resolution. You can’t steal something, do anything (like attack with it), and then sacrifice it.
: This creature deals damage equal to its power to target creature." (Assassins, Mercenaries, Pirates, Rogues, and Warlocks are outlaws.)
