Meren of Clan Nel Toth [Secret Lair Drop Series] 117 you may pay {0} rather

you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less

Set: Alpha Edition Type: Creature — Human Barbarian Rarity: Uncommon Cost: {2}{R}{R} Keldon Warlord's power and toughness are each equal to the number of non-Wall creatures you control

Set: XY: Flashfire Type: Colorless Rarity: Promo Retreat cost: 4

Set: War of the Spark Promos Type: Legendary Planeswalker — Ajani Rarity: Rare Cost: {2}{G}{W} Creatures you control have vigilance

Where dragons once roared

Meren of Clan Nel Toth [Secret Lair Drop Series] 117 you may pay {0} ratherSet: Secret Lair Drop Series Type: Legendary Creature Human Shaman Rarity: 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 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.