abaddon the despoiler mtg commander deck Warhammer 40K 100+ Box for Magic: The Gathering spells you cast from your hand with mana value X or less have cascade MTG Warhammer 40k EDH Deck:

When I cast the spell on stream, I was absolutely shocked that it only cost me six mana to make one opponent lose half their life rounded up and my other opponent sacrifice half their creatures rounded up

If you play it on Turn 1, your opponent either spends a removal spell on your one-mana 1/1, which pretty much guarantees youre trading up, or you get to untap and ramp into 4 available mana on Turn 3

Particularly with the effect, where these Mercenaries would take the payment of 3 mana from your opponent to not deal damage to them

Agent of Trachery rewards you if you take a lot of cards from other players

It will resolve before that spell