There are also plenty of straight-up merfolk tribal syenergies that round out the deck's ability to close out games, too
Volrath's Motion Sensor is
There are already artifact creatures and enchantment creatures, but cards like Animate Artifact, Zur, Eternal Schemer, Animate Land, and Spark Rupture either add the creature type or convert the card into a creature, in effect replacing the type
But which of them are the best
If the target creature is an illegal target as Thoughtweft Charge tries to resolve, it won't resolve and none of its effects will happen
If all he does is come down and give you a free Faithless Looting-adjacent effect over and over, hes actually quite hard to remove from the board provided you have a decent blocker