mtg refrain cards I need help figuring out the interaction between rousing + Obeka, splitter of seconds and aggravated assault (I realize Obeka would need a +1/+1 counter to get the refrain off in Inspiring Refrain (Card) | EDHREC

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They arent as much of a slam dunk as the legendary Kamigawa lands because they might enter tapped, but they all do the kinds of powerful things you want them to do

The Dark

Mogis, God of Slaughter deals damage unless opponents are willing to sacrifice a creature, Fate Unraveler deals damage whenever an opponent draws a card, and Blood Seeker deals damage whenever an opponent plays a creature

Oh Atraxa, Grand Unifier, how you tease

However, this is the most common deck shuffling method and you should be able to do it