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

Drafna, Founder of Lat-Nam

Phyrexian Metamorph

Great Whale

How it works

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