According to the official Magic: The Gathering rules, a 'traditional' MTG card size is 2.5 inches (6.3cm) by 3.5 inches (8.8cm)
In fact the printing of Unholy Heat (and to an extent Solitude) has mostly pushed out cards like Tarmogoyf out of the format, as the removal in the format is now so efficient that creatures either need to be one-mana, so you trade at an even level (Dragons Rage Channeler and Ragavan, Nimble Pilferer), too large to be killed by Unholy Heat (Deaths Shadow and Murktide Regent) or generate immediate value upon being played (Solitude, Fury and Omnath, Locus of Creation)
With over 1,100 different card frames, you can craft any style of card you want
Related Aetherdrift Commander deck: Living Energy Saheeli, Radiant Creator MTG Aetherdrifts Living Energy Commander deck is all about accumulating Energy Counters and using them to artificially widen your board
And Gatherer says there are 22,630 Magic cards with their own unique name