These cards are designed using unique art and frames to stand out
When Ajani, Nacatl Avenger's last ability resolves, starting with the next opponent in turn order, each opponent in turn order chooses permanents they control
That last one is a particularly odd choice given its only shown up on a single card after its initial introduction in 2008's Shadowmoor block, but Heggen says it was explicitly used as a visual joke here: the symbol looks like the quarter-circle joystick motion required to do Ryus Hadoken ability in the video games
Whenever one or more +1/+1 counters are put on Emperor of Bones, put a creature card exiled with Emperor of Bones onto the battlefield under your control with a finality counter on it
I think these four cards do an excellent job of demonstrating how much flavor +1/+1 counters can create
in the same way you add Kazuuls Fury as an MDFC to decks that have big Voltron bodies or arbitrarily large creatures, you play Pain for All as a way to help you kill people quicker