mtg mutate cards Otrimi, the Ever-Playful Commander Deck with VARIANTS Magic Ready-to-Play When math is a nightmare,

This deck is effective at removing creature threats, having a response for many situations and hopefully rendering some of your opponents cards useless with a lack of creatures

THE MANA ENGINE I really enjoy playing decks with expensive CMC Commanders because it always provides an awesome payoff for having a great mana engine at the end of the rainbow and Tiamat is an excellent example of this strategy incarnate

You can check out the detailed collectors breakdown here

The final combo that Im aware of is Heat Shimmer and Dualcaster Mage

Maybe its cephalid/octopus typal or all old border cards or CARDNAME typal where every card name is formatted as X of Y