Theyre strongly related to mana production and creature numbers, and very strong cards like Rofellos, Llanowar Emissary, Leovold, Emissary of Trest, and Priest of Titania, not to mention the support like Gaea's Cradle or Craterhoof Behemoth
That said, you may end up with softer competition since there's no ladder system on these events, so you end up getting paired with players regardless of skill level
This is a concept that applies almost exclusively to the Commander format
Card Set(s) -ROYAL BLOOD- [OP-10] CARD VIEW OP10-046 | SR | CHARACTER Kyros Attribute Slash Block icon 3 Effect [On Play] Return up to 1 Character with a cost of 5 or less to the owner's hand
Its eerie melodies can confuse foes and bring good fortune to friends
For the most value, have it become a copy of Helm of the Host so you can get double the copies of your best creature on every combat