Pan Greensleeves

Trample, Lifelink
Whenever you would pay mana for an ability, you may instead pay life equal to the converted mana cost.
If an ability would have you pay life, you may discard a card or sacrifice a creature instead.
On the end of your end step, you may choose to lose 2 life and draw a card. Otherwise, gain 2 life and
put a +1/+1 counter on Pan Greensleeves.