TrampleCumulative upkeep or (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)Earthen Goo gets +1/+1 for each age counter on it.
You gain 4 life.Recover (When a creature is put into your graveyard from the battlefield, you may pay . If you do, return this card from your graveyard to your hand. Otherwise, exile this card.)
Enchant creatureCumulative upkeep or (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)You control enchanted creature.When Krovikan Whispers is put into a graveyard from the battlefield, you lose 2 life for each age counter on it.
Counter target spell.Recover (When a creature is put into your graveyard from the battlefield, you may pay . If you do, return this card from your graveyard to your hand. Otherwise, exile this card.)
Cumulative upkeep or (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)When Jötun Owl Keeper dies, create a 1/1 white Bird creature token with flying for each age counter on it.