The Tome of Contracts

As long as The Tome of Contracts is untapped, spells you cast cost {1} less to cast.

Whenever you cast a spell with mana value 3 or greater The Tome of Contracts deals 1 damage
to you.

{t}: Add {c} and one mana of any type that a land
you control could produce, The Tome of
Contracts deals 2 damage to you.