Cryptic Trilobite has at least one +1/+1 counter on it.
Mana Needed
({4} magic symbol) available.
Steps
Activate
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Karn's Bastion by paying ({4} magic symbol) , putting a charge counter on
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Lost Jitte and two +1/+1 counters on
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Cryptic Trilobite.
Activate
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Cryptic Trilobite's first ability twice by removing two +1/+1 counters from it, adding ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) that can only be spent to activate abilities.
Activate
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Lost Jitte by removing a charge counter from it, untapping