The best cards to tutor for are artifacts that either function as silver bullets to stop your opponents gameplan, or ones that win you the game
The value of the elemental began decreasing slightly after the release of BRO but managed to stabilize with the launch of ONE and maintain its worth after the launch of MOM
It can still be done, but youll spend more time polishing than designing
The spell's mana value remains unchanged, no matter what the total cost to cast it was
Even though Cloud, Ex-SOLDIER offers additional card draw for each equipped creature, it still ends up being far better to just focus on piling everything on Cloud and protecting him rather than spreading it out: you'll kill people faster with commander damage, you'll reap bigger rewards off stuff like Behemoth Sledge gaining you way more life, and it's simply easier to protect a single creature than trying to protect your entire board
Elspeth, Storm Slayers Halo Foil variant is going for a whopping $400 right now, but thats actually slightly below market value