Great for finding cheap interaction or expensive finishers
You can constantly remove the second counter from The Eldest Reborn to force your opponents to discard a card on every one of your turns, turn Binding the Old Gods into a repeatable Maelstrom Pulse each turn, or get a steady stream of card draw or +1/+1 counters from The First Iroan Games
Mickey Mouse, Friendly Face The chaser card from this Disney Lorcana promo set
Zo-Zu is a three-mana 2/2 that makes it so that whenever a Land enters the battlefield, Zo-Zu deals two damage to that Lands controller
Although it only works for one round, it can effectively prevent players who have a card in play that gives them a substantial amount of lore, or perhaps can even come in clutch at the end turns of a game
They were also useful to sacrifice to artifact eaters such as Arcbound Ravager, or would make Broodstar bigger