The All Sets affix doesn’t contribute towards the bonus. There’s no possible way to have both the Druidic and Aftermath bonuses in effect. You can get Obsidian by converting any legends (red legends have an extremely low chance, eternal and crystal (green and light blue) have a greater chance) and by drop.
You can only get All Sets by getting the Nadroji Stone / Amulet (see LegendEx) and by putting Elixir Mythstone into a jewelry socket.
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