Great Hall of the Biblioplex

This land enters tapped unless you control two or more other lands. T: Add U or R.

Draw X cards. Then you may put a permanent card with mana value X or less from your hand onto the battlefield tapped.

This creature enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.) At the beginning of your end step, if two or more creatures died this turn, this creature becomes prepared.

Flying, vigilance Each instant and sorcery spell you cast has casualty 1. (As you cast that spell, you may sacrifice a creature with power 1 or greater. When you do, copy the spell and you may choose new targets for the copy.)

When this land enters, choose a land card name. Activated abilities of sources with the chosen name can't be activated unless they're mana abilities. Lands with the chosen name have "T: Add C." T: Add C.

Increment (Whenever you cast a spell, if the amount of mana you spent is greater than this creature's power or toughness, put a +1/+1 counter on this creature.) Whenever one or more +1/+1 counters are put on Berta, add one mana of any color. X, T: Create a 0/0 green and blue Fractal creature token and put X +1/+1 counters on it.