Often, whoever is playing Rising Waters has ways to get around it affecting them, so it's only hurting everyone else while they still get to play the game
Storm decks often use the graveyard as a resource, with cards like Underworld Breach and Past in Flames that love how efficiently this weird little frog fills that zone
Obviously, the big reveal here is the mono-white enchantment Flowering of the White Tree, which can protect your legendary creatures and give a nice buff to the rest
Ultima Weapon is a weird case: I understand the flavor of wanting to keep it on the list because it's an iconic sword from the series, but because it costs to play and still requires you to pay to equip it, it seems like the worst equipment on the list
A creature you control is considered modified if it has at least one counter on it, if it's equipped, or if it's enchanted by an Aura you control
Creatures (16) Planeswalkers (6) Lands (24) Spells (14) Joses list definitely tries to exploit how much less removal people were playing maindeck (not wanting it to get stranded against U/W or line up wrong)