We removed that ability and kept testing
Modern isnt that fast right now, but there could be a future where your deck plans on comboing off after leading a turn on a cantrip where Serum Visions being slower matters
The channel one will channel for three mana and act as a Mana Leak for three mana or counter any spell or ability, so it's one mana more, and you can just cast this as a seven mana 5/7 Crab with ward 3 a bit behind the curve, but a nice free option
Theres quite a few cards that are solid vs Turbo Fog, we all know cards like Duress, Doomfall, and counters are going to be good vs them, but what else is there
Its also probably the easiest to upgrade as both ink colors have good reasonably-priced options or very expensive but excellent ones
there are endless types of artifact decks, or maybe you want to be a three-color Saga deck rather than full-blown five colors like Tom Bombadil, or maybe you could have a pile of powerful legends