Struggle // Survive Landfall and lands matters decks rejoice with Struggle // Survive in their build
We will of course be discarding some amount of the time in this build, so Squee and Patriarchs Bidding help minimize the loss of value
When you next cast a creature spell of that type this turn, that creature enters with an additional +1/+1 counter on it
Your strategy here consists of playing as many cards as you can from exile to create a lot of Treasure and generate some strong mana advantage to play even more cards
Alexander Gregory Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
All of this is to say that Oko is extremely hard to answer in combat, so it largely requires a spell to deal with it (or, as we see in Throne of Eldraine Standard, you can go way over the top of its threat generation by, for example, making lots of 2/2s with Field of the Dead)