They appear while doing master clue scrolls when the player digs for a clue directed by the strange device or coordinates, in Single-way combat areas. Their attack is not considered melee, Ranged or Magic and as such cannot be nullified by protection prayers.
Brassican Mages have low Defence, so melee or Ranged is advised. Magic is not advised as they are resistant due to their high Magic level. Because a player cannot pray against a Brassican Mage's attack, having plenty of food before the fight is essential, especially considering that the strange device damages the player after every use.
Although protection prayers do not work against them, it can be useful to use defensive prayers such as Steel Skin to increase your overall defence. It is even more useful to use Piety or Rigour(depending on combat style) to increase both your defence and your melee/ranged stats.
For Brassican Mages fought in the Wilderness, bring items you are prepared to lose.
Item Quantity Rarity GE market price Bones 1 Always 65
Item Quantity Rarity GE market price Staff of earth 1 Uncommon 1,359 Earth battlestaff 1 Uncommon 9,079
Item Quantity Rarity GE market price Potato seed 1–4 Common 1–4 Onion seed 1–4 Common 1–4 Cabbage seed 1–4 Common 1–4 Strawberry seed 1 Uncommon 19 Grimy guam leaf 1 Uncommon 18 Grimy tarromin 1 Uncommon 174 Grimy harralander 1 Uncommon 854 Grimy avantoe 1 Uncommon 1,543
Item Quantity Rarity GE market price Cabbage 11–18 Common 231–378 Coins 51–244 Common Not sold Air rune 5–24 Common 25–120 Earth rune 7–23 Common 28–92 Pure essence 25 (noted) Common 100 Death rune 5–24 Uncommon 1,100–5,280 Sapphire 1 Uncommon 496 Prayer potion(4) 1 Uncommon 9,934 Looting bag 1 Uncommon (1/30) Not sold