Do not stick to one deck. Since you can swap cards for free, tailor your 20-card deck to counter the specific elite or boss you are about to face.
Note: Avoid third-party .exe or .apk files from unofficial sites to prevent malware risks. download-vault-the-void-the-games-download-exe
Discard unnecessary cards to gain Energy for high-powered combos. Do not stick to one deck
Infuse your cards with Void Stones to add custom effects and overcharge your deck's power. Vault of the Void on Steam enemy attacks increase your "Threat" level
Instead of immediate damage, enemy attacks increase your "Threat" level, which triggers at the end of your next turn.
You can preview enemies before encounters and adjust your deck specifically for that fight.