a potless opener ive been using (due to being poor) is
precast shadowflare, rouse and spur
bio2, miasma, bio (raging fester)
ruin2 (painflare energy drain)
miasma2( af, swiftcast, dw trance)
swift ruin3 (tridisaster enkindle)
r3 spam, clip gcd to fester before raging runs out
r2 deathflare if time allows, otherwise clip gcd after r3 to deathflare.
there are a lot of problems with this opener, such as deathflare not being in rs, and a fair amount gcd clipping. will probabaly change my opener after reading up on what others do here