Fauna Shaman + Timestream Navigator + Undertaker

Fauna Shaman

Timestream Navigator

Undertaker

How it works

1. Activate Timestream Navigator by paying 2, tapping it, and putting it from the battlefield onto the bottom of your library, causing you to take an extra turn after this one.
2. If you do not have a creature card in hand, activate Undertaker by paying , tapping it and discarding a card, returning a creature card from your graveyard to your hand.
3. Activate Fauna Shaman by paying , tapping it and discarding a creature card, searching your library for Timestream Navigator and putting it into your hand.
4. Cast Timestream Navigator by paying 1.
5. Repeat each turn.