He can play with lifelink to gain a bunch of life for attackers and then tap for it post-combat to make cheap stuff without spending any mana at all to get started
He led them to Beskir Hall, slaughtering anyone they found along the way
In Magic: The Gathering, for example, changes like this are reserved solely for digital-only formats on MTG Arena like Alchemy and Historic, where cards in players collections can easily be changed
The way continuous effects work, the God's type-changing ability is applied before the effect that removes that ability is applied
And if you pay WUBRG at the end of the turn, you keep the token
These combine with abilities that deal direct damage, produce creature tokens, and grow your creatures each time you draw that 2nd card