If another player gains control of Pietra, they can tell a joke you've already told, as long as they haven't told that joke yet
One of the standout features of the Azorius Sleeves is their improved seal strength
Custom Handmade SDCC 2018 Planeswalker proxies made from real Magic the Gathering card with many different alternated arts available for purchase.
Sorcerer Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1." Wicked Enchanted creature gets +1/+1 and "When this Aura is put into a graveyard from the battlefield, each opponent loses 1 life." Young Hero Enchanted creature has "Whenever this creature attacks, if its toughness is 3 or less, put a +1/+1 counter on it." Any time a creature has more than one Role controlled by the same player attached to it, the creature keeps the newest Role and all the others controlled by that player are put into the graveyard (and then cease to exist because they're tokens)
There are a couple lands you want to pay attention to
Lots of these cards have special art but the normal frame, or maybe a retro frame, or perhaps a special foiling over a normal frame