Generic goodstuff like green land ramp (Farseek) and mana rocks (Chromatic Lantern) are going to provide a solid foundation for this deck
When you cast your first instant spell each turn, if Kalamax is tapped, you copy the spell and can choose new targets for the copy
Previous sets have featured Mega Charizard, Mega Lucario, Mega Venusaur, and Mega Zygarde
Instead, it's the fact that it allows the player to draw two cards when an equipped creature dies that pushes it over the top The potential card advantage is unreasonable for a single mana investment, especially since the -1 to Toughness makes it extremely easy for the player to kill their own creatures on command
Since Dimension Wall specifies "this battle" if that monster is no longer a legal attacking monster, then no battle damage is inflicted to your opponent
It's important here to use a completely plain notebook, as any ink in the notebook may run, damaging the card further