Toxic Iguanar

Conditional deathtouch is the whole hook, and the green-permanent clause is the toggle that pays it off the moment your second color is already on the table. The body is a plain 1/1, but the static ability is what flips that small frame from filler into a threat the opponent has to plan around. With deathtouch live, the Lizard trades up into anything that walks into it, turning a throwaway blocker into a tax on every attack the opponent contemplates, and a feeble attacker into a credible poke against a clogged board. This is gold-card design wearing a mono-red coat: the deathtouch only switches on once you commit to a Gruul build, so a splashed copy is just a poor 1/1, while a true two-color deck gets the full effect for one mana. It belongs to an early-era line of "permanent of another color" designs that reward a color pair without literally costing two colors of mana to cast, a softer hybrid than a gold cost: you can run it in mono-red and accept the bare body, or build around it and unlock the rest. The design lives entirely in that toggle, and it remains an honest small-creature trade piece for any deck willing to keep a green permanent in play.