Syr Gwyn, Hero of Ashvale is one of my pet choices, and I actually shied away from the deck not long after it came out
Stay flexible and reactive with your strategy
For example, if player A taps an artifact for mana during their turn, and players B and C are the next players in turn order who control Treasure Nabbers, C's ability resolves before B and C gains control of the artifact
Crystron Quandax X WATER Level 4 [ MachineSynchroTunerEffect ] ATK 1800 DEF 2000 1 Tuner + 1+ non-Tuner monsters Once per Chain, during your opponent's Main or Battle Phase, you can (Quick Effect): Immediately after this effect resolves, Synchro Summon 1 Synchro Monster, using materials including this card you control
1 Dragon Whelp
She particularly works to heal Red's allied creatures