and sometimes, players themselves
Unlike merely having 10 more HP, an ability that reduces incoming damage by 10 significantly boosts its resilience, as taking three or four hits could reduce total damage by 30 or 40
But the game complexity is not only in the card text and rules
Water Fish/Effect monster with restrictions on being used as Synchro material
What this includes: Cards that give you the win if you have a certain type of deck, including cards that give you the win without explicitly giving you the win What this doesn't include: Cards that simply stop you from losing Please suggest alternate win condition spells that fit these parameters, ask about my other helpful resources for EDH, or check out this link to my scryfall search for alternate win condition spells
The key clause here is you have to play those cards during an opponents turn, forcing you to wait to cast most of your spells