Kartros, God of Perseverance

Scholar — If this is your commander, you can have
a spellbook as your secondary commander.

At the beginning of your upkeep, you gain an amount of {c} equal to the number of fail counters on permanents you control. Use it only to activate abilities of artifacts.
You may look at the first card of your library anytime. If it's a spellbook you may cast it.

"Let's add this and... Oh... Not again..."