All 7 Combos with Skullsnatcher

Thousand-Faced Shadow + Peregrine Drake + Skullsnatcher

Other: Infinite combat damage to one opponent, Infinite creature tokens, Infinite ETB, Infinite LTB

Declare Peregrine Drake and Skullsnatcher as attackers. When they aren't blocked, activate up to five lands you control by tapping them, adding at least {2}{U}{U}{B}. Activate Thousand-Faced Shadow's ninjutsu ability by paying {2}{U}{U} and returning Skullsnatcher from the battlefield to your hand, putting Thousand-Faced Shadow onto the battlefield from your hand tapped and attacking. When Thousand-Faced Shadow enters the battlefield, it triggers, creating a token copy of Peregrine Drake that is tapped and attacking. When the Peregrine Drake token enters the battlefield, it triggers, untapping up to five lands. Activate Skullsnatcher's ninjutsu ability by paying {B} and returning Thousand-Faced Shadow from the battlefield to your hand, putting Skullsnatcher onto the battlefield from your hand tapped and attacking. Repeat from step 2. Deal combat damage using the Peregrine Drake tokens, dealing infinite combat damage to the defending opponent. If you control up to five lands that can tap to produce at least {3}{U}{U}{B}, this combo nets infinite mana.