(Choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it
Set: Secret Lair Showdown Type: Creature — Rat Rarity: Rare Cost: {1}{B}{B} Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats
where X is that spell's mana value
Seven for the Dwarf-lords in their halls of stone
Doric, Nature's Warden // Doric, Owlbear Avenger [Secret Lair Drop Series] White (Choose a creature with theSet: Secret Lair Drop Series Type: Legendary Creature Tiefling Druid Rarity: Rare Cost: {3}{G} Vigilance When Doric, Nature's Warden enters the battlefield, search your library for a Forest card, put it into the battlefield tapped, then shuffle. Whenever Doric attacks, you may pay {1}{G}. If you do, transform her. Reverse Type: Legendary Creature Bird Bear Vigilance, trample When this creature transforms into Doric, Owlbear Avenger, other legendary