How to Rank Up the Quills in Warframe
To rank up the Quills, you gotta farm Sentient Cores from Eidolon hunts. Trade those cores for standing with Onkko at Cetus!
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Just hunt Eidolons on the Plains of Eidolon during nighttime. Collect Sentient Cores, then trade 'em with Onkko.
Just play the game, seriously.
Easy peasy: Eidolon hunts at night on the Plains of Eidolon! Collect Sentient Cores and exchange them with Onkko in Cetus.
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