Battle for Dominance

Target legendary creature you control fights
target legendary creature you don't control.
If target legendary creature you don't control
would be destroyed as a result of this, gain
control of that creature instead.
"When Lord Kayblis demanded a favorable answer
from Lady Camilla to become his, Lady Camilla
stated she'd rather die than suffer that disgrace. "
- Shichisei, Camilla's apostle.