For one mana, this burn spell can deal two damage to any creature or player, like Shock, but if you pay an extra four mana, it dishes out four damage instead
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Primathmech Albertian has three different effects based on how many XYZ materials it has: 2 XYZ Materials: Add any Mathemech card from your deck to your hand 3 XYZ Materials: Add any level 4 monster from your deck to your hand 4 XYZ Materials: Add any spell or trap card to your hand What this means is that you can really be flexible in your strategies and adapt on the fly
Which for black, is never a bad thing
In decks that double up on upkeep triggers like The Prismatic Bridge, you will likely need to be rolling for Mana Crypt damage multiple times in a turn
It remains to be seen whether this is worth losing access to all of the cascade support that includes green, but hes still definitely a powerful commander