One of the clear advantages of joining a Clan is the option of requesting Hero Cards you need from other Clanmates.

Requesting Cards follows a few certain rules:
1. You can request Cards for one of the previously unlocked Heroes as long as you’re short of a number of Cards for leveling that Hero up. You can request Cards once in every 12 hours. Say, you’ve for 16 Cards of a certain Hero, and you can level them up at 20 Cards; here, you can request 4 more Cards from your Clanmates. However, if you have 25 Cards of a Hero that can be leveled up at 20 Cards, you must first level them up and then request more Cards to level up even further.
2. You cannot send several different requests for different Hero Cards: only one request can be active at any given time, and it will be valid for 12 hours. If you put through a new request for another Hero’s Cards, the current one will be closed automatically.
3. Your Card request will also be closed if you manage to get enough Cards to level up the associated Hero in some other way before it expires, or if you happen to leave the Clan altogether.

Sending Cards in response to other players’ requests also has a few specifics:
1. If you send a Card to a player that needs one, you’ll get a reward of Silver and Experience that depends on the rarity of this Card: 15 Silver coins and 15 XP for a Common; 30 Silver coins and 30 XP for an Uncommon; 50 Silver coins and 50 XP for a Rare; 75 Silver coins and 75 XP for a Legendary; and 150 Silver coins and 150 XP for an Epic Card.
2. There are also a couple of limitations to sending Cards to other players. Here, everything depends on Card rarity, too: you can send up to 10 Common Cards, up to 5 Uncommon Cards, up to 3 Rares, up to 2 Legendaries, and only one Epic Card at a time.
Another limitation concerns the overall sending of Cards in response to a player’s request: you cannot send more than 100 Cards during a 24-hour period of time.