However, the red-black deck benefits significantly from its signature effect: black mage tokens which ping the opponents whenever you cast a noncreature spell
Simply cast one Beckoner, cast the other targeting the first one, then sacrifice the first one
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.) Casting a card by using its retrace ability works just like casting any other spell, with two exceptions: You're casting it from your graveyard rather than your hand, and you must discard a land card in addition to any other costs
Badgermole Cub doesnt double up your mana rocks, unfortunately, but it does do so with Earthbent lands, which even Kinnan cant do
You can still play these cards casually, and in limited games of the sets they're in
When it enters the battlefield, each opponent will lose X life where X is your devotion to Black, and then you gain all of that life