An alternate win condition thats resilient but still leaves plenty of room for interaction is exactly what Id want from an effect like this
Honorable Mentions: Surprisingly, during the So Paulo regionals, one of the top 8 of the event, Thiago Giovannetti, used a deck based on the Whimsicott-VStar line, which surprised everyone and made the card valued, before being considered a meme card: Whimsicott-V (Brilliant Stars 65/172) Whimsicott-V has 250 HP, Psychic-type, weakness to Metal-type, no resistance, for an energy as a retreat cost, and has two attacks (one of which is VStar): Trick Wind (for one Psychic Energy and two Colorless Energy) based on 160 damage, and during your opponent's next turn, they won't be able to play Item Cards or add Special Energy from their hand to their Pokmon

There are 119 multicolour cards: 28 Selesnya (white/green) 22 Boros (white/red) 19 Azorius (white/blue) 15 Orzhov (white/black) Eight Naya (red/green/white), and Mardu (red/white/black) Seven Bant (green/white/blue) Five Jund (black/red/green) Three Gruul (red/green), Abzan (white/black/green), and WUBRG (white, blue, black, red, green) Two Esper (white/blue/black), and Jeskai (red/white/blue)
But someone could very easily make the opposite point for CGC, and theyd have a good argument for it
Even in the Limited format that let you combo with Back for More and Unbreakable Bond
However, if you plan to acquire the entire collection, you would need over a dozen binders to fit all of your needs, but these binders will do the trick while looking great