By turning every creature you control into an artifact thanks to Biotransference, you pave the way for a brilliant pairing between Vhal, Candlekeep Researcher and Voltaic Construct. When Vhal taps for a hefty sum of colorless mana, her newfound artifact status allows Voltaic Construct to step in and untap her for a modest two-mana fee, netting you a surplus of mana each cycle. This loop generates infinite untaps for your entire artifact creature army and boundless colorless mana, ready to fuel anything from activated abilities to spells cast from the command zone.