Cheapest priced copy (The List): $1.29 at Card Kingdom, near mint, their price list as of .
Evolutionary Escalation 
Enchantment · Uncommon · Commander 2016 · #22
At the beginning of your upkeep, put three +1/+1 counters on target creature you control and three +1/+1 counters on target creature an opponent controls.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $1.29 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2016 | 22 | Uncommon | $1.49 | — |
| The List | C16-22 | Uncommon | $1.29 | — |
3 rulings from Wizards of the Coast
- 8 November 2016You choose two targets for Evolutionary Escalation’s ability as it’s put onto the stack. No player may cast spells or activate abilities during your turn before this happens.
- 8 November 2016If one target becomes illegal before Evolutionary Escalation’s ability resolves, you’ll put three +1/+1 counters on the target that’s still legal.
- 8 November 2016If there aren’t two legal targets for Evolutionary Escalation’s ability as it’s put onto the stack, it’s taken off the stack and no creature gets +1/+1 counters.