Catalyst Field is a Field Spell that works with all Gemini monsters to make them easier to Summon and lets you switch them back and forth between their Normal Monster and Effect Monster modes
There were lots of problems with affinity back in the day, but as long as Krark-Clan Ironworks stays banned I think the free stuff affinity gives is not quite up to the rate of the free stuff in Rakdos scam/evoke
And honestly, its even better at this point in time that we found that connection back to Magic
Like we have said before, nostalgia in TCG usual mean money
There are very few discarding effects in this format, so you will not get many chances to trash your extra copies
Deveney says they wanted to stick close to what fans would expect from its pixel art sprites and limited concept art while also expanding upon them, and hopes that the character designs should feel like how you remember them, despite being a hybridization of many different references and new ideas. To help accomplish that, WOTC even consulted directly with the Final Fantasy 6 team as they updated these character to the standards needed for Magic art