Runescape Death Guard Tier 70 The Wiki
Players can purchase additional tier 10 death. To do this you'll need to use an. They require 85 defence to wear, and at 90 crafting to make in the port's workshop, using 60.
Death guard (tier 90) The RuneScape Wiki
It has tier 20 stats, and is obtained by upgrading the tier 10 variant after the completion of kili row. Death guard (tier 10), used for necromancy attacks and to upgrade to higher tiers. When paired with the skull.
Made at the soul forge, using the 'upgrade equipment' option, in the city of um smithy, requiring a death guard (tier 60), 4 ensouled bar, and 50 bone rune s.
The solution i found is to upgrade your conduits (skull lantern & death guard) using the drop down menu for their tier which i believe you said was tier 20. Death guard (tier 80), used for necromancy attacks and to upgrade to death guard (tier 90). Death guard (tier 60), used for necromancy attacks and to upgrade to death guard (tier 70).
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Death guard (tier 40) The RuneScape Wiki
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Death guard (tier 90) The RuneScape Wiki
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Death guard (tier 20) The RuneScape Wiki