You pay five mana to untap your whole team and take an additional combat phase, then do it once more if you have the mana, which turns into your entire game alongside any mana doubler
Im incredibly bullish on Halo Fountain as a card first and win condition second, as creating creature tokens and drawing cards for untapping creatures are things almost every white deck wants to do
Kindred Boon, Return to Dust, Bloodghast, Bloodline Necromancer, Mind Stone, and Tainted Field all received new art in this deck
Heres a side view of a regular, non-foil Magic card, just for fun: When it comes to the size of digital MTG cards in pixels, it can vary
This was expected but the strategy still works really well