So, I think I'm reading this right, I think you gain an extra Kairu for each Infinita Blue on your field during each turn he survives…
From the Faq
Infinita, Blue Elemental
ERRATA TEXT: At the start of each player’s turn, that player gains (1 Kairu).
Chemaster – Blue also seems to Gain Kairu, I think I may end up playing Blue… :P