Land Level Up on just about anything and it'll become a monster in just a few attack steps, not to mention it'll start drawing cards at some point, too
Making creatures unblockable guarantees youll be able to use your Ninjutsu abilities each turn, which is exactly what Ninja decks want to do
Again, it may be slow, but it rewards you for playing slow
The real power, however, lies in the quest counters
Legendary Creature - Artificer Kor Commander (CTRL to add secondary) Artifact Dancer's Chakrams Job select (When this Equipment enters, create a 1/1 colorless Hero creature token, then attach this to it.) Equipped creature gets +2/+2, has lifelink and "Other commanders you control get +2/+2 and have lifelink," and is a Performer in addition to its other types
Not some subset of new cards, then people will just want to play a different format where they can play all their new cards