Date for Special featured Crystal(Havok & Mr. Sinister)

Atharva111

The month is going to end and there is no special crystal available in Crystals for Havok and Mr. Sinister.
Kabam please tell me when will it come to buy with units.

TheSquish671

When mister sinister's arena comes, which is after cyclops(blue). It's always new champ, old champ, new champ

Tasty_Yum_Yums

Tomorrow

Atharva111

Thank you @TheSquish671 and @Tasty_Yum_Yums .