Paradigm Shift

Exile all cards from your library. Then shuffle your graveyard into your library.

Price of Progress

Price of Progress deals damage to each player equal to twice the number of nonbasic lands that player controls.

Hive Mind

Whenever a player casts an instant or sorcery spell, each other player copies that spell. Each of those players may choose new targets for their copy.

The Twelfth Doctor

The first spell you cast from anywhere other than your hand each turn has demonstrate. (When you cast that spell, you may copy it. If you do, choose an opponent to also copy it. A copy of a permanent spell becomes a token.)
Whenever you copy a spell, put a +1/+1 counter on The Twelfth Doctor.