Phantoms are the least of our worries. The serious thing to question from 1.13 is that new "Turtle Master" potion. It basically breaks pvp and negates practically any survival possible damage. You can literally fall 256 blocks without a scratch, take a point blank end crystal blast with no armor, without even taking half a heart, and the kicker, poison IV/starving can't even get you below a full heart, basically renders a player invincible while the potion effects are active. And these things would pretty easy to come by if all they require would be the turtle shells added to an awkward potion. You would have to be exposed to some extremely unlikely circumstances to die, in a nutshell