Cheapest priced copy (Zendikar Rising Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Frogtosser Banneret 
Creature — Goblin Rogue · 1/1 · Common · Morningtide · #64
Haste
Goblin spells and Rogue spells you cast cost {1} less to cast.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
2 printings · $0.49 to $9.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Morningtide | 64 | Common | $0.59 | $9.99 |
| Zendikar Rising Commander | 43 | Common | $0.49 | — |
2 rulings from Wizards of the Coast
- 1 April 2008A spell you cast that’s both creature types costs {1} less to cast, not {2} less.
- 1 April 2008The effect reduces the total cost of the spell, regardless of whether you chose to pay additional or alternative costs. For example, if you cast a Rogue spell by paying its prowl cost, Frogtosser Banneret causes that spell to cost {1} less.