Jelenn Sphinx | Creature | Sphinx | Flying, vigilance
Whenever Jelenn Sphinx attacks, other attacking creatures get +1/+1 until end of turn. | Wesley Burt
Lavinia of the Tenth | Legendary Creature | Human Soldier | Protection from red
When Lavinia of the Tenth enters the battlefield, detain each nonland permanent your opponents control with mana value 4 or less. (Until your next turn, those permanents can't attack or block and their activated abilities can't be activated.) | Willian Murai