Mardi'Elle, Banner-Bonder

Exalted (Whenever a creature you control attacks
alone, that creature gets +1/+1 until end of turn.)
Whenever a creature you control attacks alone, it
gains enlist until end of turn.
You may exert Mardi'Elle, Banner-Bonder as it attacks. When you do, you may enlist target
creature you don't control without summoning sickness that shares a color with Mardi'Elle. (Tap
that creature, then add its power to this creature's
until end of turn.)