EDHREC data shows that Oko sees the most play in legends-matters decks like Sisay, Weatherlight CaptainSisay, Weatherlight Captain or planeswalker-matters decks built around cards like Nicol Bolas, Dragon-GodNicol Bolas, Dragon-God and Oath of TeferiOath of Teferi
You can have Dee Kay's ability resolve before those visit abilities, after them, or in between any of them
Saffgor: This is the bird payoff card at a reasonable mana value, but I honestly don't see it
Eshki is a bit more of a generic big creature commander, not having any specific Dragon abilities, but giving you a free draw when you cast a creature with power four or more, and then dealing damage equal to Eshkis power when you cast a creature with power six or more
Secret Lair x Street Fighter Lightning Bolt Dealing 3 damage to any target for just 1 red mana has made Lightning Bolt one of the most iconic and efficient spells in Magics history
In most cases, the controller of the attacking creature will still become the monarch as it is likely their turn