1 702.12b A permanent with indestructible canât be destroyed. 2  Such permanents arenât destroyed by lethal damage, and they ignore the state-based action that checks for lethal damage (see rule 704.5g). 3  702.12c Multiple instances of indestructible on the same permanent are redundant.
lethal dose. n. (Pharmacology) the amount of a drug or other agent that if administered to an animal or human will prove fatal.
One important success factor is the dosage-how much of any particular drug needs to be taken for it to be lethal. Minimum lethal doses (MLDs) were historically calculated based on animal testing, with the results extrapolated for humans.