The reason for that is due to the number on the card going above the official number of cards in the set
While Teysa is very potent she is another victim of narrowness
An argument can be made for returning your board to hand if someone else wipes, but this also means your opponents now have access to their cards in hand again, a lot of those which will potentially have better and more impactful enter the battlefield (ETB) effects than your own
Taborax, Hopes Demise Taborax, Hope's Demise is a demon cleric that cares about your creature deaths
6 Mind's Dilation Casting Your Opponent's Spells Mind's Dilation is one of the cards seeing its first non-Secret Lair reprint
Considering how good location cards are shaping out to be in Into the Inklands, Treasure Guardian, Protector of the Cave is well worth putting into your deck alongside them thanks to its amazing stats and cheap cost