Activate Phyrexian Altar by sacrificing Wall of Deceit, adding {U}.
When Wall of Deceit dies, Missy's first ability triggers, returning Wall of Deceit from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature.
Activate Wall of Deceit's morph ability by paying {U}, turning it face up.
Repeat.

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Missy

Phyrexian Altar

Wall of Deceit

Activate Phyrexian Altar by sacrificing Wall of Deceit, adding {U}.
When Wall of Deceit dies, Yedora triggers, returning Wall of Deceit from your graveyard to the battlefield face down as a Forest land.
Activate Wall of Deceit by tapping it, adding {G}.
Activate Wall of Deceit's morph ability by paying {U}, turning it face up.
Repeat.

Infinite green mana

Infinite landfall triggers

Yedora, Grave Gardener

Combos with "Wall of Deceit"