There are a TON of combos available to Teysa Karlov decks
Throwing in a few other explore cards like Deepfathom Echo or Jadelight Spelunker could be a way of livening up the exploration theme
When this land enters, sacrifice it unless you return an untapped Forest you control to its owner's hand
Not only does it result in more plant tokens, but the army you make becomes far more formidable once you trigger landfall three or four times in a single turn
It also has the honor of being one of the most truly terrifying designs in this entire horror-inspired set, looking like it stepped right out of a folk horror film like Hereditary
If you want the strongest deck right out of the box, the community agrees, theCounter Blitz deck, led by Tidus, Yunas Guardian, is the winner