Cheapest priced copy (Archenemy: Nicol Bolas): $0.99 at Card Kingdom, near mint, their price list as of .
Scute Mob 
Creature — Insect · 1/1 · Rare · Duel Decks: Zendikar vs. Eldrazi · #22
At the beginning of your upkeep, if you control five or more lands, put four +1/+1 counters on this creature.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
5 printings · $0.99 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2018 | 161 | Rare | $1.29 | — |
| Duel Decks: Zendikar vs. Eldrazi | 22 | Rare | $1.29 | — |
| Archenemy: Nicol Bolas | 73 | Rare | $0.99 | — |
| Modern Masters 2015 | 161 | Rare | $0.99 | $3.49 |
| Zendikar | 182 | Rare | $1.29 | $3.99 |
One ruling from Wizards of the Coast
- 1 October 2009Scute Mob’s ability has an “intervening ‘if’ clause.” That means (1) the ability won’t trigger at all unless you control five or more lands as your upkeep starts, and (2) the ability will do nothing if you control fewer than five lands by the time it resolves.