Intruder Alarm

Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.

Royal Assassin

Phyrexian Arena

At the beginning of your upkeep, you draw a card and you lose 1 life.

Intrepid Hero

{T}: Destroy target creature with power 4 or greater.

Zur the Enchanter

Flying
Whenever Zur the Enchanter attacks, you may search your library for an enchantment card with mana value 3 or less, put it onto the battlefield, then shuffle.

Rhystic Study

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.