Urza, Academy Headmaster

Flying Whenever this creature deals combat damage to a player, you may draw a card from that player's library.

(T: Add R.)

Flying When this creature enters, destroy target creature and put your head on the table. Sacrifice this creature when your head stops touching the table.

Whenever you roll a 5 or higher on a die, this creature gets +X/+X until end of turn, where X is the result. 6: Roll a six-sided die.

Vigilance Knight of the Widget's power and toughness are each equal to the number of Order of the Widget watermarks among permanents you control.

When this artifact enters, shuffle your library and deal it into four libraries. If anything refers to your library, choose one of your libraries for it. Play with your libraries' top cards revealed. When this artifact leaves the battlefield, shuffle your libraries together.

Flying This creature can block only creatures with flying.

When this enchantment enters, exile target creature an opponent controls until this enchantment leaves the battlefield. At the beginning of the upkeep of the exiled card's owner, that player rolls two six-sided dice. If they roll doubles, sacrifice this enchantment.