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Playing off of the once on each turn Darksteel Monolith, Skittering Cicada gives everything flash and gets huge when you take advantage of him

EX Holon Phantoms leaned hard into its Delta Species gimmick, but its this shimmering legendary that collectors remember most

You have a good chance to draw an extra card and make a Food token

When you do, each opponent exiles a nonland, nontoken permanent they control and a random nonland card from their library, then Gilded Ambusher deals damage to them equal to the total mana value of the cards exiled this way

Skittering Cicada has similar utility but instead of slowly evolving, it gets trample and +X/+X where X is the mana value of the spell we cast, so it can become a huge threat from out of nowhere