Or, if nothing else, a list of the most promising ones
One targets the other part of the loop and the other can target another card like Blade Splicer or Inspiring Overseer
Aerith, Last Ancient Amarant Coral Barret, Avalanche Leader Bugenhagen, Wise Elder Cloud, Ex-SOLDIER Kimahri, Valiant Guardian Maester Seymour Professor Hojo Red XIII, Proud Warrior Shelinda, Yevon Acolyte Sin, Unending Cataclysm Tidus, Yuna's Guardian Tifa, Martial Artist Tromell, Seymour's Butler Wakka, Devoted Guardian Yuna, Grand Summoner
This means you can disrupt your opponents entire first turn with the right setup 3 Athreos, God Of Passage Bring A Coin The last God to come to Pioneer Masters on this list is Athreos, God of Passage, and goodness does this God put in the work
They primarily give permanents keywords like protection, indestructible, and hexproof, though the best of them phase out your permanents