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Search your library for up to three Aura cards with different names, reveal them, put them into your hand, then shuffle.
'Counter target spell.
When Anti-Venom enters, if he was cast, return target creature card from your graveyard to the battlefield. If damage would be dealt to Anti-Venom, prevent that damage and put that...
'Counter target spell.
'When this creature enters, search your library for an Aura card that could enchant it. If this creature is still on the battlefield, put that Aura card onto the battlefield...
Search your library for up to three Aura cards with different names, reveal them, put them into your hand, then shuffle.
'Counter target spell.
'Prevent all damage that would be dealt to target creature this turn.
'Enchant land
Whenever enchanted land becomes tapped, this Aura deals 2 damage to that land's controller.
'Enchant creature
When this Aura enters, put a +1/+1 counter on target creature you control.
Enchanted creature gets -1/-1.
'When this creature enters, search your library for an Aura card that could enchant it. If this creature is still on the battlefield, put that Aura card onto the battlefield...
'Counter target spell.