Cheapest priced copy (Game Night 2019): $1.99 at Card Kingdom, near mint, their price list as of .
Cryptic Serpent 
Creature — Serpent · 6/5 · Uncommon · Jumpstart · #146
This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
5 printings · $1.99 to $8.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Amonkhet | 48 | Uncommon | $2.29 | $8.99 |
| Commander Masters | 83 | Common | $2.29 | $3.49 |
| Game Night 2019 | 18 | Uncommon | $1.99 | — |
| Jumpstart 2022 | 285 | Uncommon | $2.49 | — |
| Jumpstart | 146 | Uncommon | $2.49 | — |
3 rulings from Wizards of the Coast
- 18 April 2017A split card only counts once for Cryptic Serpent's ability, even if it's both an instant and a sorcery.
- 18 April 2017Cryptic Serpent's ability doesn't change its mana cost or mana value. It just reduces the cost to cast the spell.
- 18 April 2017Cryptic Serpent's ability can't reduce its cost to less than {U}{U}.