To learn System Of A Down - War chords, these are the chords to practise in sequence: C#m, C, Cm, C, C#, C, G# and C. I suggest starting at a calm pace of 53 BPM, and as you gain confidence, approach the song's BPM of 106. Adjust the capo based on your vocal range and chord preference, keeping the song's key of C Minor in mind.