Enchantment Outpost Siege As this enchantment enters, choose Khans or Dragons
This card features basic stats that are the same as the above Te Ka card, but also includes a special ability to force an opponent's character card to challenge on their next turn
Exile this enchantment at the beginning of the next end step, then you may cast it from exile on a later turn.) If a creature, Spacecraft, or Planet you control would enter the battlefield with a number of counters on it, it enters with twice that many instead

Ajani, Inspiring Leader Apostle of Invasion Aragorn, Hornburg Hero Arcade Cabinet Ascendant Acolyte Assault on Osgiliath Big Mother Mouser Biogenic Upgrade Bright-Palm, Soul Awakener Bristly Bill, Spine Sower Byrke, Long Ear of the Law Captain Marvel, Apex Avenger Chocobo Knights Court of Garenbrig Death Kiss Dragonsguard Elite Drizzt Do'Urden Elvish Vatkeeper Evolution Vat Fangs of Kalonia Ferrafor, Young Yew Fractal Harness Gavel of the Righteous Gilder Bairn Grand Master of Flowers Growth Curve Grunn, the Lonely King Hound of Griselbrand Hulk, Strongest There Is Hydra's Growth Invigorating Surge Kalonian Hydra Kinetic Ooze Knighted Myr Level Up Lightning Runner Lily Bowen, Raging Grandma Mossborn Hydra Nick Fury, Agent of S.H.I.E.L.D
Write it down
For three mana, it lets you destroy all creatures that entered the battlefield that turn - or you can exile a black card from your hand to play it for free