Idunn, the Tree Keeper

Whenever you cast a creature, draw a card
Whenever you cast an instant or sorcery,
tap target non-land permanent, it doesn't untap
during that plays next untap step.
Whenever another creature dies, gain 2 life
during the next endstep if you have 60 or more
life, transform Idunn, the Tree Keeper
If Idunn, the Tree Keeper dies, exile it instead,
then return it to the battlefield during your next
upkeep.