Legendary creatures will remain legendary and so on
If the returned creature can't attack for any reason (such as being tapped or having come under your control that turn), then it doesn't attack
While hes in play, your opponents cant gain life and whenever an opponent casts their first spell per turn, you get to choose a different opponent and deal damage equal to its mana cost
hexproof A creature with hexproof cant be the target of spells or abilities your opponents control, including Aura spells
Lastly, if you dont want to end up with a purchase youd end up regretting, note that its often smarter to buy single cards if you only want one specific hit
As it is a fan-made format, they believe that if your particular play group has difficulties with certain cards, youre welcome to augment or add to their list to solve the problem