Mounters Paradise

{t}: Add {w} or {b} to your manapool
{w}{b}{t}: Create a 2/2 horse creature token with Mount {2} and haste. Put a sun counter on Mounters Paradise
When Mounters Paradise has 7 sun counters on it destroy it, and put a 4/4 Legendary horse creature token named Booster, The first horse onto the battlefield. It has haste, trample, mount {3}, and horses and mounters you control get +x/+x where x is the amount of horses you control.