Alchemist: Master

You posses a keen mind when it comes to understanding and mastering the elements of nature. You gain the following benefits:

• Increase your Intelligence or Wisdom ability score by 1, to a maximum of 20.
• When you roll on the Experimental Elixir table for the elixir’s effect, you can roll twice and choose the result. 
• When you reach certain levels in the Alchemist subclass, you can make more elixirs at the end of a long rest: two at 5th level, three at 9th level and four at 15th level. Roll for each elixir’s effect separately. Each elixir requires its own flask. This effect substitutes the 3rd-level Alchemist feature, Experimental Elixir.
• When Crafting Potions you can expend double the time and the material costs to apply the Extended Spell Metamagic option to the potion's effect.