(Unstable Clachan isn't a spell.)
Unstable Clachan enters the battlefield tapped.
Each creature you control can't be blocked except by two or more creatures.
: Add to your mana pool.
: Add or to your mana pool. Each opponent gains 1 life.
: Add 
to your mana pool.: Add 
or 
to your mana pool. Each opponent gains 1 life.
