Deadeye Navigator + Gwenna, Eyes of Gaea + Mass Hysteria

Deadeye Navigator

Gwenna, Eyes of Gaea

Mass Hysteria

How it works

1. Activate Gwenna by tapping it, adding 1 that can only be spent to cast creature spells or activate abilities of creatures.
2. Activate Gwenna by paying 1, blinking it.
3. When Gwenna enters the battlefield, Deadeye Navigator's soulbound ability triggers, repairing it and Gwenna.
4. Repeat.

This clever engine spins into motion thanks to Mass Hysteria, which gives everything haste so you don't have to wait around for summoning sickness. You kick things off by tapping Gwenna, Eyes of Gaea for mana, which conveniently provides the exact {1}{U} needed to activate the blink ability granted by Deadeye Navigator's soulbond pairing. When Gwenna flickers out and returns, Deadeye Navigator triggers to repair the pair, refreshing Gwenna so you can immediately tap it again for more mana and repeat the cycle.