All 70 Combos with Rescue Skiff

Preston, the Vanisher + Felidar Guardian + Rescue Skiff

Infinite Mana: Exile all nonland permanents opponents control, Infinite creature ETB, Infinite creature LTB, Infinite blinking of permanents, Infinite creature tokens, Infinite landfall triggers, Infinite mana lands you control can produce, Infinite mana lands you control that enter the battlefield untapped can produce

Cast Rescue Skiff by paying its mana cost. When Rescue Skiff enters, it triggers, returning Felidar Guardian from your graveyard to the battlefield. When Felidar Guardian enters, it and Preston trigger. Resolve the Felidar Guardian trigger, blinking another permanent you control. Resolve the Preston trigger, creating a token copy of Felidar Guardian that is a 0/1 Illusion. When the Felidar Guardian token enters the battlefield, it triggers, blinking the nontoken Felidar Guardian. Repeat from step 3.