Ive seen both Patrick Chapin and Shaun McLaren adding Reave Soul into their Abzan lists as one-ofs, which makes me not only proud to be on the card but also impressed they found it as well since I have been playtesting extensively with the set this past week
Sublime is one of the hardest hitting cards cost so reasonably and isn't a high risk card despite being a 4 mana 3 toughness dork as she generally has a strong effect on the game the turn you make her
You can get around this by running plenty of free instant speed sacrifice effects, which is pretty easy since black is loaded to the brim with these types of effects
Note also that Plains cards doesnt mandate basic Plains, so youre free to search up [mtg_card]Prairie Stream[/mtg_card], [mtg_card]Sacred Foundry[/mtg_card], or (if youre so lucky) [mtg_card]Scrubland[/mtg_card], depending on what you need
At your end step, each player can put two +1/+1 counters on one of their creatures, but doing so goads those creatures