As for that core theme, Anje Falkenrath remains the queen of madness
Mana Cost / Mana Value Some rules and effects care about a cards mana value as a measure of how expensive the card is
The other row can hold another cube or two, making a giant cube pool between the two rows, or holding all the necessary basic lands and any counters or tokens that would be useful
Brain Dead x Magic: The Gathering Craft Limited Edition Secret Lair Card Set Split into drops of Creatures, Lands and Staples
Firemind Vessel Kilo, Apogee Mind Krang, Master Mind Mazemind Tome Mind Carver Mind Stone Mind's Eye Mindcrank Mindless Automaton Mindlink Mech Mindlock Orb Mindslaver Mindsplice Apparatus Mindstorm Crown Mirrormind Crown Myr Mindservant Robobrain War Mind Staff of the Mind Magus Sword of Body and Mind Terisian Mindbreaker The Mind Stone
When Indominus Rex enters the battlefield, draw a card for each counter on it