Holy Dragon, Religious Soul Saver, Majesty Lord Blaster's G Unit!

Holy Dragon, Religious Soul Saver

Stride (Released when both players' vanguards are grade 3 or greater!)-Stride Step-[Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them] Stride this card on your (VC) from face down.
[AUTO](VC):[Counter Blast (1) & Choose a face down card named "Holy Dragon, Religious Soul Saver" from your G zone, and turn it face up] When this unit is placed on (VC), if you have a card in your heart with "Blaster" in its card name, you may pay the cost. If you do, choose up to three of your units, and they get [Power]+5000 until end of turn. Then, if the number of cards in your soul with "Blaster" in its card name is two or more, this unit gets [Critical]+1 until end of turn.

Since I only will focusing on Clan Fight Rule, I may suggest 3 main grade 3 units in play, Light Source Seeker, Alfred Exiv, Majesty Lord Blaster and Blaster Blade Burst. However, with Alfred Exiv and Burst, you must already have any blaster grade 2 unit in soul before you can ride them and you will need to reride another copy of themselves to meet the requirement for Religious Soul Saver full skill. Unless you are not planning to play his second skill.

*Please be note that Alfred Exiv need to Legion to meet his requirement. Since Stride may choose either Legion Leader or Legion Mate as heart.

Majesty Lord Blaster

[CONT](VC):If you have a card named "Blaster Blade", and a card named "Blaster Dark" in your soul, this unit gets [Power]+2000/[Critical]+1.
[AUTO](VC):[Choose a unit named "Blaster Blade", and a unit named "Blaster Dark" from your (RC), and put them into your soul] When this unit attacks, you may pay the cost. If you do, this unit gets [Power]+10000 until end of that battle.

Majesty Lord Blaster would be the best choice among the others. You only need to meet Majesty Lord Blaster skill requirement so that you can have Blaster Blade & Blaster Dark in your soul. It gets better because of it you can have a better defense because on Majesty Lord Blaster first skill.