It feels like youre going to need 3-4 mana minimum to be able to madness most of these cards (most your discard outlets cost 2 mana, most your madness costs are 1-2, though some higher)
Yet it seems like I shouldn't have been so quick to throw those worn cards away, because apparently, there's a collector for everything
Similarly, if you sacrifice a creature to activate a mana ability while casting a spell with convoke, that creature won't be on the battlefield when you pay the spell's costs, so you won't be able to tap it for convoke
It maintains the characteristics of the main spell in any zone other than the stack
I think that minor factors like the second point of toughness and the lifegain offered by the looting ability are very easy to undervalue, and the sum of the parts on Vohar added up to a very powerful Merfolk Looter