These creatures from various blocks all served the same purpose as the Study/Gift, but at the cost of one card and three mana (or four mana in the case of Stinging Barrier)
Great inventory option for stores
Our all time favorite five-color card, though, has to be Tom Bombadil, from MTG Lord of the Rings
You do not gain anything from casting your Swords to Plowshares as soon as Delver of Secrets hits the battlefield only to have it getting countered by a Daze, followed up by a Wasteland to blow you out of the water once and for all
Be aggressive with an army of creature tokens with the help of the squad mechanic, which lets you create extra token copies of creatures
Additionally, it might not always be easy or cost-effective to buy a specific card on its own