Koth of the Hammer
Scars of Mirrodin Mythic Rare 
Cost: Mana 2Mana RMana R
CMC: 4
Card Type: PlaneswalkerKoth
Starting Loyalty: 3
Oracle Text: Loyalty up 1: Untap target mountain. It becomes a 4/4 red Elemental creature until end of turn. It's still a land.

Loyalty down 2: Add Mana R to your mana pool for each Mountain you control.

Loyalty down 5: You get an emblem with "Mountains you control have 'Mana Tap: This land deals 1 damage to target creature or player.'"