There are a total of 50 Calcified Fragments to find on Oryx's Dreadnaught. They are little glowing crystals that you can find hidden around the Dreadnaught, and you will also get some for killing bosses in the Court of Oryx. You need 45 of these to get the Touch of Malice Exotic Scout Rifle. Once you have all 50 you get... a shader.

Timeline:

[0:05] I
[0:55] II
[1:58] III
[2:30] IV
[3:04] V
[3:59] VI
[5:04] VII
[6:14] VIII
[7:07] IX
[7:37] X
[9:13] XI
[10:18] XII
[11:05] XIII
[11:45] XIV
[12:50] XV
[13:38] XVI
[14:58] XVII
[15:58] XVIII
[16:24] XIX
[17:34] XX
[18:33] XXI
[20:07] XXII
[20:47] XXIII
[21:28] XXIV
[22:31] XXV
[23:26] XXVI
[23:54] XXVII
[24:24] XXVIII
[24:54] XXIX
[25:18] XXX
[25:37] XXXI
[26:22] XXXII
[27:07] XXXIII
[27:36] XXXIV
[29:18] XXXV
[30:25] XXXVI
[32:28] XXXVII
[36:35] XXXVIII
[36:54] XXXIX
[36:54] XL
[36:54] XLI
[36:54] XLII
[37:12] XLIII
[37:12] XLIV
[37:12] XLV
[37:23] XLVI
[37:32] XLVII
[37:56] XLVIII
[38:11] XLIX
[38:30] L

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