Malenia, Blade of Miquella

Reach, First Strike, Lifelink
Waterfowl Dance 1: Once per turn, Malenia may
fight another creature you don't control. If
Malenia wins the fight, she gets a +1/+1 counter.
If Malenia would have more than 5 +1/+1
counters at a time or she dies or gets exiled,
transform Malenia instead.
"I am Malenia, Blade of Miquella."