Since Agent gives +1/+1 counters each time you attack the right person, you can really benefit from The Bastion of Karn, which can tap for four mana to proliferate and increase your counter count on your Commander
And of course, the biggest application is to attack with everyone, untap your creatures, and spread the +1/+1 counters around
Banshee of the Dread Choir A five mana spirit with myriad that forces a discard whenever it connects
Scene Box Contents The Black Sun Invasion Scene | Illustration by Fahmi Fauzi While each Scene Box varies slightly from set to set, the Avatar: The Last Airbender Scene Boxes give us a great example of the same basic structure
If youre going all in on Greven, you probably want the Whispersilk Cloak / Lightning Greaves / Rogues Passage suite to make sure you get him through
These can be gargantuan creatures, powerful Equipment cards, or devastating spells