Embodiment of Knowledge

Enchant library
Enchanted library is a 1/1 creature with flying and hexproof.
Whenever enchanted library attacks, put X +1/+1 on it, where X is its power, then reveal X cards from the top of your library. Copy each spell revealed this way. You may cast the copies without paying their mana costs.
If enchanted library would leave the battlefield, instead destroy this enchantment.

An omniscient force born from the unending search for knowledge.