Cheapest priced copy (Dominaria Remastered): $0.35 at Card Kingdom, near mint, their price list as of .
Seton's Desire 
Enchantment — Aura · Common · Odyssey · #268
Enchant creature
Enchanted creature gets +2/+2.
Threshold — As long as there are seven or more cards in your graveyard, all creatures able to block enchanted creature do so.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
2 printings · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dominaria Remastered | 176 | Common | $0.35 | $0.49 |
| Odyssey | 268 | Common | $0.35 | $1.49 |
One ruling from Wizards of the Coast
- 8 December 2022If a creature the defending player controls can't block the enchanted creature for any reason (such as being tapped), then it doesn't block that creature. If there's a cost associated with having a creature block the enchanted creature, the defending player isn't forced to pay that cost, so it doesn't have to block in that case either.