Irregular Spiral

When Irregular Spiral enters the field, choose a spell type. If that spell type enters the field, place a counter on Irregular Spiral. If Irregular Spiral reaches 15 counters, you may sacrifice it. If you do, destroy all chosen spell types. If not, destroy all other spell types.
{r}{w}{g}{u}{b} (All players must contribute at least one mana.) Remove 2 counters off Irregular Spiral and anything else that has counters.