Unreliable-Spin
This opener is also known as "SPDC", A troll opener concept by URATOS and fixed by GRENKIFY. This opener starts with two T-spin Singles and finishes with a Neo-TSD and an incomplete TST (TSD).
this opener is terrible on purpose <3
First Bag
The opener starts with a stick-base, but the I piece is at the other side (Mons). Early O before S/Z is required.
Second Bag
This bag is not 100%. O>L
If you can't make it, best to just avoid it and go to midgame.
Third Bag
There are many ways to build this bag.
If possible, best to wait for a second T for a double TSD attack. If it's impossible to make an over hang, you are free to take the Neo-TSD and continue the build.
https://harddrop.com/wiki/Polymer_T-Spins#Neo-TSD
Fourth Bag
Freestyle stage. Best to make a 8-1 stack here.
See also
https://harddrop.com/wiki/Polymer_T-Spins#Neo-TSD [How to do Neo-TSD]