All 3 of them are Kaleidoscope targets. 10 is required for Brio + Unicore hands, 11 is required for Gungnir + Unicore and the Blazar should actually be a Five Headed Dragon, but I pulled a Blazar from a pack and it was good enough. Five Headed Dragon is superior in the slot because it gives you a bigger monster to send off Punishment, can kill anything up to 5k, and also facilities OTK's better with White Knight as sending Five Headed + a 3K monster from your opponents extra deck + Fleur is 8k (White Knight goes up to 5k under Fleur, Fleur goes to 3k direct) Realistically you're never actually going to go into any of the extra deck cards, you'd never want to go into Star Eater, he's only in there as one of the biggest level 11 targets for Kaleidoscope and 3100 attack.

Almiraj is to link the Diviner off to protect other cards on board from destruction effects, Nekroz have their own in engine protection that is searchable, but it's second and primary use is to facilitate Ecclesia summons from hand, since you control a monster summoned from the extra deck, allowing you to get both Diviner and Ecclesia on board, and extend by adding either Maximus, or setting up to disrupt your opponent with Dogmatika Punishment