Cryptic Trilobite + Umbral Mantle Combos

1 known combo featuring both cards in Commander

Infinite +1/+1 counters on certain creatures Infinitely large creature until end of turn

Combo 1 with Shaile, Dean of Radiance // Embrose, Dean of Shadow + Crystalline Crawler

Also requires: Shaile, Dean of Radiance // Embrose, Dean of Shadow Shaile, Dean of Radiance // Embrose, Dean of Shadow Crystalline Crawler Crystalline Crawler
Results: Infinite +1/+1 counters on certain creatures · Infinitely large creature until end of turn
Steps
  1. Cast Crystalline Crawler by paying {4}.
  2. Cast Cryptic Trilobite by paying {2}.
  3. Activate Shaile by tapping it, putting a +1/+1 counter on Crystalline Crawler, Cryptic Trilobite and any other creature that entered the battlefield under your control this turn.
  4. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding {U}.
  5. Activate Cryptic Trilobite's first ability by removing a +1/+1 counter from it, adding {C}{C} that can only be spent to activate abilities.
  6. Activate Shaile by paying {3} and untapping it, giving it +2/+2 until end of turn.
  7. Repeat from step 3.
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