Even the primary commander from The Ruinous Powers, Abaddon the Despoiler, grants cards in your hand cascade if their mana cost is equal to or less than the amount of damage dealt to your opponents in a turn
One of the few possible colored creatures, Emeria Shepherd, could also help there
The Empirical Vanilla Test: strategy.channelfireball.com/all-strategy/hIf you look at all the creatures with abilities that are fully modeled by the EVT, they cantrip, you can just get mana value predictions for their non-cantrip attributes...For example, a 4/4 with trample is projected to cost 3.9 MV
Zen Takahashi Another sideboard card, I personally rated Force of Vigor higher than Veil of Summer, but I was outvoted on this one
Theyre printed on S33 German black-core cardstock with a UV-coated matte-satin style finish , plus consistent cutting