mtg playtest cards Wowzer, the Aspirational [Mystery Booster 2 Cards] What are test cards and

Sometimes its one card thats mysteriously taller because someone printed it like a fridge magnet

If exerted be that through singing, questing, using one of their abilities or other reasons in another players turn these characters can be challenged, requiring the challenger to exert their own card and then resulting in both characters simultaneously applying their strength to their rivals willpower

Archon of Emeria Archon of Emeria is a flying hate bear thats reasonably stated as a 2/3 flier for 3 mana, and the each player cant cast more than one spell text is excellent in EDH

The above list may not be cohesive but it is full of dinosaurs and thats all that matters

Chasm has no real replacement, but you could run Scute Swarm or another landfall-fueled token generator instead of the field