Cheapest priced copy (Dark Ascension): $0.35 at Card Kingdom, near mint, their price list as of .
Markov Warlord 
Creature — Vampire Warrior · 4/4 · Uncommon · Foundations Jumpstart · #577
Haste (This creature can attack and {T} as soon as it comes under your control.)
When this creature enters, up to two target creatures can't block this turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dark Ascension | 97 | Uncommon | $0.35 | $0.49 |
| Jumpstart 2022 | 573 | Uncommon | $0.35 | — |
| Foundations Jumpstart | 577 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 22 January 2011You may target zero, one, or two creatures with Markov Warlord's "enters" triggered ability.
- 22 January 2011The creatures can't block any creatures that turn, not just Markov Warlord.