Nimble Obstructionist is seeing more and more play in Modern, and theres no way it should still be just $3
You could use this move 3 times and have 7 energy cards on Charmander, then you could retreat it out and evolve it into Charizard on your bench

2026 Pikachu ex 276 Values & Gem Rate Raw Value | $1,050 PSA 10 Value | $3,500 PSA 9 Value | $1,150 Gem Rate | 72.4% Profitability PSA Submission Tier | Regular Expected Value | $1,790.11 Expected Profit | $740.11 Expected ROI | 70.5% 2026 Pikachu ex #277 Values & Gem Rate Raw Value | $420 PSA 10 Value | $1,600 PSA 9 Value | $440 Gem Rate | 62.7% Profitability PSA Submission Tier | Value Max Expected Value | $696.44 Expected Profit | $276.44 Expected ROI | 65.8% 2026 Mega Dragonite ex #290 Values & Gem Rate Raw Value | $750 PSA 10 Value | $2,240 PSA 9 Value | $750 Gem Rate | 68.0% Profitability PSA Submission Tier | Value Max Expected Value | $1,117.92 Expected Profit | $367.92 Expected ROI | 49.1% 2026 Mega Gengar ex #284 Values & Gem Rate Raw Value | $1,300 PSA 10 Value | $3,500 PSA 9 Value | $1,400 Gem Rate | 68.3% Profitability PSA Submission Tier | Regular Expected Value | $1,787.02 Expected Profit | $487.02 Expected ROI | 37.5% Grading & Other Notes You can find our Complete Guide to PSA Grading here

You can only lose it if you take battle damage
For this reason, Dragons Rage Channeler has become a staple of Grixis tempo decks in Legacy