Infected Forest-Walker

Contagion (When this creature deals combat damage
to another creature, that creature gains 'Concerning
symptoms'.)
Concerning Symptoms (At the beginning of your
upkeep, you may pay 2 life. If you do, remove 'Concerning symptoms' from this creature. If you do
not, creatures beside this creature gain 'Concerning Symptoms')

"She roams the wilds, spreading nature’s harsh
lessons to all who cross her path."