Proof as the Strongest is a Union Arena card from Rurouni Kenshin UA41BT/RNK-1-031. Compare listings from Singapore Union Arena sellers on CardJio, then jio them on WhatsApp.
Card type
EVENT
Color
Blue
Energy
3
AP
1
Trigger
Final
Source title
Rurouni Kenshin
Card Text
Choose up to two of your AP cards and switch them to active.