Warframe Mastery Ranks 11-20,17 MR11,00:03:48.00,00:00:22.00 MR12,00:15:17.00,00:01:08.00 MR13,00:25:57.00,00:01:03.00 MR14,00:53:12.00,00:02:43.00 MR15,01:18:07.00,00:02:29.00 MR16,01:46:25.00,00:02:49.00 MR17,02:09:26.00,00:02:18.00 MR18,02:49:25.00,00:03:59.00 MR19,03:04:26.00,00:01:30.00 MR20,03:09:29.00,00:00:30.00