Cheapest priced copy (Future Sight): $0.35 at Card Kingdom, near mint, their price list as of .
Char-Rumbler 
Creature — Elemental · -1/3 · Uncommon · Time Spiral Remastered · #158
Double strike
{R}: This creature gets +1/+0 until end of turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Future Sight | 96 | Uncommon | $0.35 | $1.49 |
| Time Spiral Remastered | 158 | Uncommon | $0.35 | $0.49 |
4 rulings from Wizards of the Coast
- 1 May 2007A first strike damage step will be created if Char-Rumbler is in combat, even if its power is 0 or less. The normal combat damage step will follow.
- 1 May 2007If Char-Rumbler's power changes between the assignment of first-strike combat damage and the assignment of normal combat damage, Char-Rumbler will deal a different amount of damage in each combat damage step.
- 1 May 2007Yes, Char-Rumbler's printed power is -1. While its power is -1 or 0, it simply deals no combat damage.
- 19 March 2021Because Char-Rumber's power is normally negative, you'll have to give it at least +2/+0 before it'll deal damage. It won't deal negative damage.