Eternal Conflict

Each player must pay {x}, {x} being any land of their choice. If it was {b} or {r}, that player summons a 6/6 Lord of Woe creature. If it was {w}, {u} or {g}, that player summons a 6/6 Lord of Hope creature.
If a player's Lord of Woe or Lord of Hope is destroyed, the opposing player's Lord is granted +2/+2 and Undying.