Meren of Clan Nel Toth [Commander Anthology] Magic Player Rewards 2008 Sacrifice the creature at the

Sacrifice the creature at the beginning of the next end step

If you don't

and Popplio

Put the chosen cards on top of your library in any order

Set: Planechase Type: Land Uncommon Cost: {2}

Meren of Clan Nel Toth [Commander Anthology] Magic Player Rewards 2008 Sacrifice the creature at theSet: Commander Anthology Type: Legendary Creature Human Shaman Mythic Cost: {2}{B}{G} Whenever another creature you control dies, you get an experience counter. At the beginning of your end step, choose target creature card in your graveyard. If that card's converted mana cost is less than or equal to the number of experience counters you have, return it to the battlefield. Otherwise, put it into your hand.