Cheapest priced copy (Commander Masters): $15.99 at Card Kingdom, near mint, their price list as of .
Skittering Cicada 
Creature — Insect · 2/2 · Rare · Commander Masters · #750
Flash
You may cast colorless spells as though they had flash.
Whenever you cast a colorless spell, until end of turn, this creature gains trample and gets +X/+X, where X is that spell's mana value.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $15.99 to $49.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Masters | 717 | Rare | $15.99 | — |
| Commander Masters | 750 | Rare | $17.99 | $49.99 |
3 rulings from Wizards of the Coast
- 28 July 2023If the colorless spell has {X} in its mana cost, use the value chosen for X when calculating that spell's mana value.
- 28 July 2023Skittering Cicada's second ability applies only to casting spells. It does not, for example, change when you may activate abilities that can be activated "only as a sorcery."
- 28 July 2023Skittering Cicada's last ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered.