Here's some help for people that are new , you can join or create a guild it would be better just to join one or start your own but it will be harder to get people to join . choice is yours . There's lots of ways to obtain 5 star creatures and you can get your first one through gem alter, That's a guaranteed chance for one first time though, Guild maps have lots of 5 star creatures to get and is guaranteed to get one once you claim 50 shards for one, coupon alter is good too , you Can save your coupon's up to have better odds of drawing a 4 or 5 star creature or use them when you get them choice is yours. You can also get a 5 star or 4 star through lucky spin cost 100 gems to spin but there's more use full stuff you can use gems for , such as boosters and get a 4 star for sure if your lucky will get a 5 star too. Also ultima chest can give you a 4 or 5 star after 10 opens you get guaranteed 5 star . choice is yours. There's lots to do in the game takes time to get good cards etc.
Also 4 star heroes are just as good as 5 stars , many ways to get them though alter or when there's a 5 star hero booster but note not a guaranteed chance to get them. Doing mines can get you one too , get shards in trial too ,