Omniclown Colossus // Pie-roclasm

When casting a spell as an Adventure, use the alternative characteristics and ignore all of the card's normal characteristics. The spell's color, mana cost, mana value, and so on are determined by only those alternative characteristics. If the spell leaves the stack, it immediately resumes using its normal characteristics.

All the rulings from this point on are about how to play with Adventures. If you are an experienced adventurer, you can venture forth.

If an object becomes a copy of an object that has an Adventure, the copy also has an Adventure. If it changes zones, it will either cease to exist (if it's a token) or cease to be a copy (if it's a nontoken permanent), and so you won't be able to cast it as an Adventure.

If an adventurer card ends up in exile for any other reason than by exiling itself while resolving, it won't give you permission to cast it as a creature spell.

A single Pie-roclasm will destroy all non-Clown creatures with toughness 3 or less. Two will destroy all non-Clown creatures with toughness 6 or less. Three, with toughness 9 or less. Four, with toughness 12 ½ or less. That's a lot of pie.

If a spell is cast as an Adventure, its controller exiles it instead of putting it into its owner's graveyard as it resolves. For as long as it remains exiled, that player may cast it as a permanent spell. If an Adventure spell leaves the stack in any way other than resolving (Pie-roclasm doesn't require targets, so most likely by being countered), that card won't be exiled and the spell's controller won't be able to cast it as a creature later.

If an effect copies an Adventure spell, that copy is exiled as it resolves. It ceases to exist as a state-based action; it's not possible to cast the copy as a creature.