Cheapest priced copy (Commander 2020): $5.49 at Card Kingdom, near mint, their price list as of .
Pako, Arcane Retriever 
Legendary Creature — Elemental Dog · 3/3 · Mythic · Commander 2020 · #13
Partner with Haldan, Avid Arcanist
Haste
Whenever Pako attacks, exile the top card of each player's library and put a fetch counter on each of them. Put a +1/+1 counter on Pako for each noncreature card exiled this way.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.99 to $5.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2020 | 13 | Mythic | $5.49 | $0.99 |
One ruling from Wizards of the Coast
- 17 April 2020You exile cards and put +1/+1 counters on Pako all while Pako's last ability is resolving. Nothing can happen between the two, and no player may choose to take actions.