The most significant tactical aspect of your opponent's combat damage step is mostly the same as your own: it is after damage has been assigned but is the last step before it resolves
Innistrad Remastered has those in spades, with special artwork, fancy frames, and the introduction of our very first headliner card: the serialized, double rainbow foil, movie poster Edgar Markov
Switch to Foil Customers who purchased Wilds of Eldraine : Galvanic Giant also bought
Giving you the flexibility of having card draw or a counterspell (and frequently, X for one is going to be enough) is quite strong
Players decide in turn order, starting with the active player (or the next opponent in turn order if the active player isn't sacrificing anything), which permanent(s) they will sacrifice
I find the idea of Seeker to be weird