Among the Allies character, Ling, Imperial soldier and Philoctetes, No-Nonsense Instructor are the two most notable
First, there's March of the World Ooze, a mythic enchantment that turns all your creatures into powerful 6/6 oozes
The Power Nine were only printed for the very first core card sets, and the group includes the Black Lotus, Ancestral Recall, Time Walk, Timetwister, and the Mox jewel cards: Mox Pearl, Mox Ruby, Mox Emerald, and Mox Jet, as well as the Mox Sapphire
2: Create a 1/1 red Devil creature token with "When this token dies, it deals 1 damage to any target." 7: Target player draws seven cards and loses 7 life
These Oil counters do different things depending on the card, but if youre in those colors, you should be looking to spread Oil counters to as many of your cards as possible to maximise the effect they have on the game
Second, each player must sacrifice a NON-token creature, meaning opponents cannot slide by by throwing a random 1/1 squirrel into a wood chipper