Exosister in general can only works when your opponent moves cards from GY. The problem when their opponent does not do such things these girls are just sitting there chilling doing nothing. Your usual play is just going 1st summon mikailis search and set returnia. But since we don't have the budget to play 2 or more mikailis we use the next cheaper things, generaider package. You can just summon harr on opponent turn as an interaction in case your opponent does not use GY. In grave situation you can just tribute the spellcaster exosister for harr.
ties of the brethen can summon spam our field with all 3 exosisters we played.
Terrors of the over root is there to make sure we can activate arment on our turn so we have respectable beatstick.
left/right hand magician is another of our negate
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