FOILCheapest priced copy (Forgotten Realms Commander): $0.35 at Card Kingdom, near mint, their price list as of .
Shriekmaw 
Creature — Elemental · 3/2 · Rare · Lorwyn Promos · #139★
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
When this creature enters, destroy target nonartifact, nonblack creature.
Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
15 printings · $0.35 to $17.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Forgotten Realms Commander | 110 | Uncommon | $0.35 | — |
| Archenemy | 24 | Uncommon | $0.69 | — |
| Commander 2014 | 160 | Uncommon | $0.69 | — |
| Commander 2015 | 137 | Uncommon | $0.49 | — |
| Commander 2020 | 136 | Uncommon | $0.39 | — |
| Commander Anthology | 68 | Uncommon | $0.35 | — |
| Commander 2011 | 100 | Uncommon | $0.59 | — |
| Duel Decks: Ajani vs. Nicol Bolas | 54 | Uncommon | $0.49 | — |
| Lorwyn Eclipsed Commander | 85 | Uncommon | $0.39 | — |
| Lorwyn | 139 | Uncommon | $0.99 | $3.99Out of stock |
| Murders at Karlov Manor Commander | 139 | Uncommon | $0.39 | — |
| Lorwyn Promos | 139★ | Rare | — | $4.99 |
| The List | CMA-68 | Uncommon | $0.39 | — |
| Time Spiral Remastered | 331 | Special | $0.99 | $17.99 |
| Ultimate Masters | 113 | Uncommon | $0.35 | $2.99 |
2 rulings from Wizards of the Coast
- 19 March 2021If you pay the evoke cost, you can have Shriekmaw's own triggered ability resolve before the evoke triggered ability. You can cast spells after that ability resolves but before you have to sacrifice Shriekmaw.
- 19 March 2021To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as an evoke cost), add any cost increases, then apply any cost reductions. The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.