Zendikar is a harsh, dangerous plane, and threats can come from anywhere: from dangerous creatures, from outsiders, or from the land itself
Id say this was a very fun and worthwhile goal, but really, Gold Star cards just have massive appeal for me and there isnt another set in the English TCG, imo, that comes close (1st Edition Base PSA 10 complete set obviously is on a tier of its own, should go without saying, but Gold Stars are second for me in terms of prestige, price, scarcity and collectability)
If you read between the lines, for 4 mana on the first cast, you get to choose from 16 cards in a full-sized Commander table that then can be cast to assemble your remaining combo or just find the combo pieces you need to kill them on the next turn with, of course, Demonic Consultation + Thassa's Oracle
The card draw is good filtering and setup for repeatable draw triggers and reanimation shenanigans
Play Brawl on Magic Arena for a free alternative
I can see an argument for Invasion of Karsus being in the A-tier, but its inefficiency compared to Brotherhood's End gives me pause