In this case, we are going to use the synergy of cards that a tribal Human deck can offer, providing a cheaper alternative focused on combat, without forgetting the synergy and also managing to exploit Alesha's ability as a commander
When I am three or more colours I am generally quite keen to include a Mox Diamond in my list
(8/23/2019) If you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs and not pay that cost
you will run into the seller who won't take a penny less than TCG-mid for every common they have (run, don't walk, to you car), but it happens often enough that I no longer feel bad about just shooting an offer out there for the seller to reject
Once attackers and blockers are decided, you can assess how the combat resolves
Finale of Revelation is a good card, but we already have Hydroid Krasis for X-based card draw, even if it's half of X, and we could really use more answers