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We don't have any idea as to what's in the deck besides Szarekh himself and a Sol Ring, but we do know what he's about: Szarekh seems to be good with artifact creatures and Vehicle cards, but wouldn't be optimal to crew a Vehicle himself due to his need to attack
it costs nothing to use, and it can also be used as an interrupt
The Commander, Kaalia of the Vast, helps you bring creatures into play, whether theyre Angels, Demons, or Dragons
You might even imagine the feeling of your guide's hand over your hand
Except for rule inserts and tokens, which are made of a different card stock and dont use the opaque glue that regular MTG cards do