TLDR: In your specific case, Lizardfolk are from Volo's Guide To Monsters, a book that is not allowed in DDAL Eberron play, and it did not start the Eberron Campaign at level 1. It is not a legal character for Oracle of War Eberron DDAL play.
They are entirely separate campaigns.
DDAL's Forgotten Realms campaign and DDAL's Eberron campaign have different ...
The Infuse Item feature states:
you gain the ability to imbue mundane items with certain magical infusions. The magic items you create with this feature are effectively prototypes of permanent items.
Additionally, the specific Radiant Weapon infusion says:
This magic weapon grants a +1 bonus to attack and damage rolls made with it.
(all emphases are ...
You can only acquire Greater Dragonmark in E6 with extreme cheese and a permissive DM.
(tl;dr Dusk Giant cheese is the least questionable method.)
Greater Dragonmark (ECS, p. 54) requires:
Least Dragonmark, Lesser Dragonmark, 12 ranks in any two skills, Member of appropriate dragonmarked race and house
The feat requirements are doable (Lesser Dragonmark ...