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That's White's version of Heroic Intervention, and it'll blow out board wipes, target removal, and combat tricks all the same

Yes, you can do that

run Fervors to give those tokens haste, run Aggravated Assault to get extra combats and therefore extra +1/+1 counters from Edgar Markov, and run any/all of the cheap vampire creatures and their associated lords

Sacrifice artifacts to Breya, Etherium Shaper for removal, life gain, or direct damage

Ideally, we would remove some of the fringe mechanics like Myriad and Vanishing, but it's good to know what they do, and the cards that utilize them are fairly straightforward