card sleeves pages Trading Sleeve Pages, PANDRI 100 Pack 9 Pocket Trading Card Storage Album 11 Holes Fit 3 Ring Binder : Office Products Each pocket measures 3.5x2.5 and fits standard size trading cards Keep Your Trading cards safe Ultra Pro Trading Card Sleeves

If not interrupted, the targeted card would change owners for the rest of the turn, effectively becoming a member of Yumas team

Product Overview Compatible with Chimera & More 58mm x 89mm Phantom Sleeves are high quality, 100m card sleeves made specifically for board gaming

Your second example for properly summoned monsters does not work because it is not possible to attempt to Fusion Summon Sea Monster of Theseus outside of a chain, and you cannot use Solemn Judgment (or any card or effect that negates summons) to negate the Summon of a monster that was Summoned during a chain

You can only use this effect of "Mecha Phantom Beast Hamstrat" once per turn