Rafi, Retro Racer RR04e/477 (Un-Known Event Playtest Cards) Slime Sovereign Enchant permanent Enchanted permanent is

Enchant permanent Enchanted permanent is a colorless Forest land

you lose 1 life for each burden counter on The One Ring

Depending on your Shifting Currents' direction— • North— Put a buff counter on an ally you control

This card's mana value is 10

Rafi, Retro Racer RR04e/477 (Un-Known Event Playtest Cards) Slime Sovereign Enchant permanent Enchanted permanent isWhen Rafi enters and at the beginning of the first upkeep in a game where it's your commander, there's mana burn and combat damage uses the stack for the rest of the game. (If you don't know what that means, ask somebody over 30.) {R}, Sacrifice Rafi: Each player adds {R}{R}{R}.