Dakkon has the potential for getting huge as you play more lands, but without green for the ramp Dakkon Blackblade is just a Commander who's tragically in the wrong colours for our modern game
Frequently Asked Questions How much is Spined Sliver worth
If you want to be that player at the table, you can use Ghostly Flicker to target Agent of Treachery and Mystic Sanctuary
They ultimately do much the same thing in this archetype but Elder does it more conveniently, appropriately and better
Demonic Tutor almost feels perfectly balanced in my cube in the same vein as City again being something that is played but far from whenever it can be
Similarly, if a spell is cast without paying its mana cost, but the player did pay mana for additional costs such as from kicker or from Thorn of Amethyst, Vexing Bauble's first ability won't trigger and won't counter that spell