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However, this card eventually got a reprint in Bloomburrow Commander as a fitting token producer

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1 Treasure Cruise

Sower of Discord is a fun one, especially if you have more than two opponents to pick from giving you a chance for some fun politicking

3 Dark Confidant Emet-Selch, Unsundered Esper Terra Gogo, Master of Mimicry Golbez, Crystal Collector Hope Estheim Joshua, Phoenix's Dominant Kefka, Court Mage Kefka, Ruler of Ruin Kuja, Genome Sorcerer Mysidian Elder Quistis Trepe Shantotto, Tactician Magician Summon: Esper Ramuh Tellah, Great Sage Terra, Magical Adept The Emperor of Palamecia The Lord Master of Hell Trance Kuja, Fate Defied Venat, Heart of Hydaelyn Vivi Ornitier Xande, Dark Mage

Infect is a mechanic that does this pretty well, but you can also use spells such as target creature gets -2/-2 until end of turn or something similar