Drafna, Founder of Lat-Nam | Phyrexian Metamorph | Great Whale

Cards

You control up to seven lands that can tap to produce at least ({5} magic symbol) ({U} magic symbol) ({U} magic symbol) .

Activate up to seven mana-producing lands by tapping them, adding at least ({5} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Cast
Phyrexian Metamorph by paying ({3} magic symbol) ({UP} magic symbol) , choosing to have it enter the battlefield as a copy of
Great Whale, except it's an artifact in addition to its other types.
When
Phyrexian Metamorph enters the battlefield, it triggers, untapping up to seven lands you control.
Activate
Drafna's first ability by paying ({1} magic symbol) ({U} magic symbol) , returning
Phyrexian Metamorph from the battlefield to your hand.
Repeat.