I was so concerned with Kain's control effect being downside or needing to hurt the opponent that I hadn't even considered the card could instead switch sides but give you an upside when you gave him away
Disneys trading card game (TCG) was highly anticipated then and still is today

$4.99 Ishai, Ojutai Dragonspeaker (0053 - Benedikta Harman) Final Fantasy Through the Ages $9.99 Isshin, Two Heavens as One (0054 - Lightning, Lone Commando) Final Fantasy Through the Ages $18.99 Najeela, the Blade-Blossom (0042 - Cloud Strife) Final Fantasy Through the Ages $12.99 Tymna the Weaver (0018 - Cecil Harvey) Final Fantasy Through the Ages $2.29 Teferi, Mage of Zhalfir (0032 - Edea Kramer) Final Fantasy Through the Ages $3.49 Kenrith, the Returned King (0023 - Noctis Lucis Caelum) Final Fantasy Through the Ages $10.99 Chromatic Lantern (0061 - Crystal of Altar Cave) Final Fantasy Through the Ages $3.49 Bruse Tarl, Boorish Herder (0050 - Hugo Kupka) Final Fantasy Through the Ages $1.99 Inalla, Archmage Ritualist (0052 - Kuja, Mage Manufacturer) Final Fantasy Through the Ages $3.49 Kraum, Ludevic's Opus (0056 - Barnabas Tharmr) Final Fantasy Through the Ages $2.29 Traxos, Scourge of Kroog (0020 - Giant of Babil) Final Fantasy Through the Ages $5.99 Gix, Yawgmoth Praetor (0035 - The Shadow Lord) Final Fantasy Through the Ages 0 results found

Therefore, the best strategy is to attempt a sort of curve in ink cost