Clash Of Doom

Circumnavigate (at the beginning of each players upkeep they gain control of this permanent)
{x}{w} Summon X 1/1 human solider tokens, you may only use white mana for this
{x}{x}{b}: Summon X 2/2 Black Zombie tokens you may only use black mana for this
{x}{x}{b}{u}: summon X 3/2 Eldritch torkens you may only use black and blue mana for this