Cryptic Trilobite

Text:

Cryptic Trilobite enters the battlefield with X +1/+1 counters on it.
Remove a +1/+1 counter from Cryptic Trilobite: Add {C}{C}. Spend this mana only to activate abilities.
, : Put a +1/+1 counter on Cryptic Trilobite.

Rulings:

• 4/17/2020 A mana cost of <img src="/Handlers/Image.ashx?size=small&amp;name=X&amp;type=symbol" alt="Variable Colorless" align="absbottom" /><img src="/Handlers/Image.ashx?size=small&amp;name=X&amp;type=symbol" alt="Variable Colorless" align="absbottom" /> means that you pay twice X. If you want X to be 3, you pay <img src="/Handlers/Image.ashx?size=small&amp;name=6&amp;type=symbol" alt="6" align="absbottom" /> to cast Cryptic Trilobite.
• 4/17/2020 Activated abilities contain a colon, such as Cryptic Trilobite’s activated mana ability and its last activated ability. They’re generally written “[Cost]: [Effect].” Some keyword abilities are activated abilities (such as cycling) and will have colons in their reminder text.
• 4/17/2020 You can spend the two colorless mana produced by Cryptic Trilobite on two different activated abilities.