Nokia Shiramine (BT5-092) - Battle of Omni

[On Play] You may play 1 "Agumon" or "Gabumon" from your hand without paying its memory cost.
[Main] When digivolving one of your Digimon into a Digimon card in your hand with "Garurumon", "Omnimon", or "Greymon" (other than "DoruGreymon", "BurningGreymon", or "DexDoruGreymon") in its name, you may suspend this Tamer to reduce the memory cost of the digivolution by 1.

[Security] Play this card without paying its memory cost.