mtg commander starter deck - Chaos Incarnate (Black-Red) With a 100 Commander Starter Pack - Green:

It only costs three ink though its not inkable itself and it gives you a lore as soon as you play using the action Say hello

Stormbreath Dragon also featured at that very same World Championship, where it was used as a powerful finisher and a way to push through damage

Any counters that were on it cease to exist

Being able to reuse your spells over and over again sounds powerful and interesting in theory, but in practice it leads to a stale play experience

However, as mentioned earlier, cat decks tend to play lots of creatures, so it might be hard to capitalize on Y'shtola's triggers

If you're a commander beginner we have a guide to show you the ropes