Here's a fun one. I call it, "The Song That Never Ends." It takes two pieces. One is Yenna, Redtooth Regent (Legendary creature) and the other is Three Blind Mice (Enchantment - Saga & also shares a name with a nursery rhyme). Yenna has an ability that states "2 (tap): Choose target enchantment you control that doesn't have the same name as another permanent you control. Create a token that's a copy of it, except it isn't legendary. If the toke is an Aura, untap Yenna, Redtooth Regent, then scry 2. Activate only as a sorcery." Three Blind Mice have 4 (that's right FOUR) stages. Stage 1 - Create a 1/1 mouse creature token. Stage 2/3 - Create a token that's a copy of target token you control. Stage 4 - Creatures you control get +1/+1 and gain vigilance until end of turn. The combo works like this: Have Yenna on the field and not summoning sick. Play Three Blind Mice. When you draw your card and get the trigger to advance the saga to Stage 2, use Yenna to make a token copy of Three Blind Mice. Resolve the saga's stage two trigger to copy the token copy of itself. As the tokens advance to stages 2 and 3 you keep self replicating the saga and it becomes "The Song That Never Ends."
