mtg modern sideboard cards The Best For Mill Post-MH3 Mastering Rakdos Hollow One in

Then, the Ballista can ping itself as many times you want, gaining a counter every time it does

[7] "Kogla, the Titan Ape", a regular card in the Ikoria: Lair of Behemoths set, is a clear reference to King Kong

Cid, Timeless Artificer Cid, Timeless Artificer is an interesting build-around that I imagine comes in two flavors: You either go hard on looting, cycling, and self-mill to throw multiple copies of Cid in the graveyard, or you do some Mirror Box shenanigans

Update: Its been found in a Costco store and seems very real, though no official announcements have been made yet

If you want to see more ways to get new cards in MTGA

You also get to scry twice, which for the aggro typal style is really valuable to ensure that you can top-deck what you need