Cheapest priced copy (Commander Legends): $1.29 at Card Kingdom, near mint, their price list as of .
Keeper of the Accord 
Creature — Human Soldier · 3/4 · Rare · Fallout · #451
At the beginning of each opponent's end step, if that player controls more creatures than you, create a 1/1 white Soldier creature token.
At the beginning of each opponent's end step, if that player controls more lands than you, you may search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
10 printings · $1.29 to $9.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends | 27 | Rare | $1.29 | $1.99 |
| Commander Legends | 621 | Rare | $3.49 | $9.99 |
| Murders at Karlov Manor Commander | 70 | Rare | $1.29 | — |
| March of the Machine Commander | 191 | Rare | $1.49 | — |
| Commander Legends Promos | 27p | Rare | $2.29 | $2.49 |
| Fallout | 164 | Rare | $1.29 | $2.49 |
| Fallout | 451 | Rare | $1.29 | $2.99 |
| Fallout | 692 | Rare | — | $3.99 |
| Fallout | 979 | Rare | — | $2.49 |
| The List | CMR-27 | Rare | $1.49Out of stock | — |
2 rulings from Wizards of the Coast
- 10 November 2020If the opponent doesn't control more creatures than you as their end step begins, the first ability won't trigger. The same is true for lands and the second ability. Each of those abilities will check again when it tries to resolve. If the opponent no longer controls more creatures (or lands) than you, the ability won't resolve and will have no effect.
- 10 November 2020Both triggered abilities trigger at the same time. You may put them on the stack in either order.