The gargoyle faces no real use there - change it for a rewind time, which can be used on the pharaoh for scarab producing and uses
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OTOH, the pharaoh would make so your time quantum - which already plays a big part on the deck - be even more used. So instead of just using a gargoyle, use something like a Minor Vampire that helps with some healing.
On the attack part of it, the lava golem doesn't seems to get all that eating because the two graboids already take a big part of the production.