Meren of Clan Nel Toth
{2}{B}{G}
Legendary Creature -- Human Shaman
3/4
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 mana value is less than or equal to the number of experience counters you have, return it to the battlefield. Otherwise, put it into your hand.
Rescue from the Underworld
{4}{B}
Instant
As an additional cost to cast ~this~, sacrifice a creature.
Choose target creature card in your graveyard. Return that card and the sacrificed card to the battlefield under your control at the beginning of your next upkeep. Exile ~this~.