Okay, look. A d20 goes by 5% increments. This is not to be contested, it is logical enough.
To roll a specific number on a D20 gives you one in twenty odds, equals 5%. A 70% percent chance, whilst it looks like a high number, means that there is 30/5=6 Outcomes that fail. So, you must roll a six or upward. Come now, it's annoying if you fail three times in a row, but it's not like it's therefore tigged against you. Sure, that's fairly easy to beat, typically, but the fact that you get a streak of three misses is certainly not unheard of; I've done *far* worse at the D&D table than *that*.
