Having the ability to disable adjacent minions can put a player at a serious disadvantage
While there are solid reprints like Kindred Discovery and Reflecting Pool, this list focuses on just whats new, as youll know if youre anticipating a reprint
Then you can discard two cards at the beginning of your first main phase to return this to your hand from your graveyard, which is card disadvantage naturally but with madness, lands, discard triggers like Archfiend of Ifnir, and loads more, it's got value
I havent tried mixing and matching other combinations of two inks yet (you can have up to two ink colors in a deck)
The peak for this kind of removal is Attrition, which is borderline mass removal if you are playing the right deck
If an opponent creature is reduced to 0 toughness through his ETB (Enter the Battlefield) effect, they'll die, adding another +1/+1 counter to Sephiroth