MerKaBa is something of an interesting easy meditation. It takes about two minutes to perform and seems very easy to pick up but it's one of those unlimited meditation. In other words it doesn't have a speed limit. Despite doing the merkaba not just long ago a few times but in recent times within the span of two or three years time period. It's something very complex and geometric in nature.
First there is two MerKaBa's we know the enemy hexagram version and our version. Using the octahedron or dual pyramids it establishes a geometric energy field around you also because it's not hexagram it does not connect you with Saturn. I have done heavy research on the merkaba, not just on A-F, Yahoo, and the Russian division of ours in describing the merkaba. But funny enough all the way since 2006 sermon, H.P. Cobra mentioned how
"a needle thrown at a window, breaks it. Hell no, but if the needle is vibrating at the speed of light it may shatter a mountain". So basically higher vibration in physics means faster results.
Merkaba's main point is to use geometric effects to not just generate a vibration template but also an energy release from breathing in energy into the internal solar ball but a friction of release of energy from the two pyramids spinning. Think of it like Ol Argedco Luciftan's mention on how the merkaba seems similar to a free-energy mercury engine in a vimana.
The merkaba also has interesting properties like sublimating astrological aspects from the planets and transits. Since your raising your vibration and when the negative comes in it either doesn't interact or becomes sublimated.
As for affirmation I'm not quite sure what to affirm I guess in simplest terms it might be "My soul is vibrating at the speed of light at all times in the most happy, beneficial, and best way for me".
But begs the question what more can the merkaba be used for. It does state in about_mkb.
MerKaBa PDF by Shael(Note it's a download of MKB information.)
http://tinyurl.com/y45fjl89
To be honest I've done merkaba personally myself heavily sometime since around; daily; 2016 or 2017 and it wasn't till just a few months ago that I dropped doing it. It's not a bad meditation or anything but perhaps it affects people differently.
And yes I do wish myself to know more about merkaba particularly why such a badass meditation doesn't affect me at all. I guess meditating in beta state or light alpha state isn't enough transcendental capacity to really feel the meditation.
All in all MerKaba is an everyday meditation since it affects everything disregard the once permanent establishment of the field it can be done once every two or three days. It's too simple not to do it everyday.
Also for RTR it's very good much faster than Raum Tetregrammaton even if you drop all vibrations to 13 repetitions. And on top of that vibrating at the speed of light imprints much more deadliness to the RTR into the air.