(It's an artifact with ", , Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.") Landfall Whenever a land you control enters, creatures you control get +1/+1 and gain vigilance and haste until end of turn
On the other hand, if untapping multiple permanents is part of a cost (such as that of Halo Fountain's last two abilities), you can't "untap" the same permanent more than once to pay that cost
It's literally in tutorials used to introduce new players to Arena for the first time, and there's no reason it can't exist in paper
As their followers are compleated, it starts affecting the gods
A lot of that is thanks to Zurgo Stormrender, a three-mana creature that creates tokens but lets you either draw cards or drain your opponents whenever a creature token you control leaves the battlefield