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'(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When this Siege enters, you...
'Flying
Vigilance (Attacking doesn't cause this creature to tap.)
'Flying
Vigilance (Attacking doesn't cause this creature to tap.)
'Flying
Vigilance (Attacking doesn't cause this creature to tap.)
'Flying
As this creature enters, choose a card type.
You and creatures you control have protection from the chosen card type.
'Serra Avatar's power and toughness are each equal to your life total.
When Serra Avatar is put into a graveyard from anywhere, shuffle it into its owner's library.
'Lifelink (Damage dealt by this creature also causes you to gain that much life.)
As long as you have 30 or more life, this creature gets +5/+5 and has flying.
'Flying
Vigilance (Attacking doesn't cause this creature to tap.)
'Flying
Whenever another creature you control with power 2 or less enters, put two +1/+1 counters on that creature.
'Flying
Vigilance (Attacking doesn't cause this creature to tap.)
'Flying
Vigilance (Attacking doesn't cause this creature to tap.)