Agent of the Shapeshifter

When you control 8 or more nontoken
creatures, change this permanent to
"The Ultimate Shapeshifter"
(Treat as a creature, but still an Agent card)
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[The Ultimate Shapeshifter]
This card is a copy of all other creatures on
the battlefield combined. Its power and tough-
ness are equal to the number of creatures on
the battlefield. Reducing this cards toughness
to 0 does not kill it. [ X / X ]