If Valley Mightcaller enters at the same time as one or more other Frogs, Rabbits, Raccoons, or Squirrels you control, its second ability will trigger for each of them
Once again, this card can Shift for four mana
However, it turns out player disdain for this mechanic was so high that Wizards eventually banned the entire lot of attractions from sanctioned play
Soulbond is a very odd mechanic, and one that hasn't been returned to much since it was first printed in the original Innistrad block, but Deadeye Navigator is probably the most iconic of the cards with the mechanic due to the ability to go infinite with some pretty innocent looking cards (plus Dockside Extortionist, but we dont need to worry about that one in Commander anymore!)
Ive fired Path at early mana dorks to slow explosive starts, and used it mid-combat to remove the creature that would end me
1 Erkenbrand, Lord of Westfold