Theoretically, Ponder gives you four chances to find it: three by looking at the top three cards of your library, and one more in case you want to shuffle them all away and draw after
Players have found plenty of combos to enable with Chatterfang, whether to get them miles ahead of their opponents or to outright win the game
This is Commander's stapliest blue staple, after all: One of the best stax cards in the game, one of the best card draw effects in Magic, and overall among the strongest enchantments you can play
Casting the card again due to rebound's delayed triggered ability is optional
Phyrexia: All Will Be One is right around the corner
Of course, an honorable grandma mention goes to Eunice Blackblade, who got up to some wacky stuff in her own right