From: https://www.vainglorygame.com/academy/?tab=the-market
HOW TO GET HEROES, SKINS AND CARDS IN VAINGLORY
If you want to buy heroes, skins or cards for Vainglory then head over to the in-game Market! Whether you shop the Market on iOS or on Android, your purchases are shared across all devices as long as you use the same Vainglory account.
ICE
ICE is the premium currency in Vainglory and can be used to acquire heroes, skins and cards. You purchase ICE for real money. When you purchase ICE in Vainglory, the game will use the method of payment you have on file with Apple for iTunes and with Google for Google Play.
For more information on in-app purchases through iTunes, see Apple’s iTunes Store: About In-App Purchases support article or Google’s Buy in-app items support article.
GLORY
Glory is the free currency in Vainglory and can also be used to acquire heroes, skins and cards. You earn for free Glory by playing the game.
You can earn more Glory with good behaviour, which is reflected by your Karma score. Karma is gained whenever you complete games and is lost whenever you abandon them. Each Karma level increases Glory earnings from regular games. You can check your Karma score on your player profile.
You can also earn extra Glory every day by completing the daily achievements. There are three daily achievements, each rewarding you with increased amounts of Glory. Complete the “First Win of the Day”, “Third Win of the Day” and the “Sinister Seven” daily achievements for bonus Glory. You can find more info about the requirements, rewards and your progression on the achievements on your player profile.
CARD PACKS AND BOXES
Another great way of collecting cards is by getting Card Packs from Boxes! You can find the Boxes in the GET CARDS section on the MARKET.
The number of the cards that are available in a Box is limited as each Box on the market contains a finite number of cards. By spending the free Glory or the premium ICE on a Box you pull a Card Pack from the Box. Each Card Pack contains 4 cards as a reward. The cards for the Card Pack are drawn on a random basis from the Box. Each time a Card Pack is pulled from the Box the likelihood of getting a specific card increases as the number of remaining cards decreases.
PEEK IN BOX
Before you spend your hard earned Glory and valuable ICE you may want to take a peek inside the Box! To help you make sure you can go after the cards you’re looking for we allow you to take a look inside and check out the contents of the Box. You can see all the cards you have drawn from the Box so far and which cards are still remaining inside.
GLORY BOXES
These are the Boxes that use Glory as a currency to get Card Packs. In the Glory Boxes you can find Common cards as well as a combination of Rare, Epic and/or Legendary cards. Tip: use the Peek in Box option to inspect the content of the Box.
ICE BOXES
Acquiring cards from the ICE Boxes uses the premium in-game ICE currency. The likelihood for acquiring high rarity cards is increased since the card content of the ICE Boxes exclude Common cards and only contains Rare, Epic and Legendary cards! Tip: use the Peek in Box option to inspect the content of the Box.
BOX EXPIRATION
Boxes are only available for a limited amount of time and each Box may be on a different timer. Each Box in the Market shows the remaining time for that Box. Once the timer expires the Box is removed from the game and you will lose the progress you made on the Box. If you were after a specific set of cards you may want to make sure you get them from the Box before it’s gone! Once a Box is removed from the game it will be replaced by a new, different Box with a new unique set of cards.
BOX REFILL
If you’re making great progress on your card collections and you happen to draw all the cards from a Box before it expires, then the Box is refilled with the same set of cards again. You can then continue to draw more cards from the Box and Weave more skins!
SKINS, CARDS AND WEAVING
You can weave skins for your heroes to change their appearance in the game. Weaving is a great way to unlock a unique look to your favorite heroes and distinguish yourself from other players!
To weave skins for your heroes you will need to collect all the required cards. You can find all the different skins and the card collection requirements for weaving the skins in the GET SKINS section in the MARKET. If you have collected all the required cards you can also Weave them from there.
Alternatively, you can also buy Tier 1 skins directly using ICE. However, all Tier 2 and Tier 3 skins are exclusive and can only be acquired by collecting all required cards. In addition to collecting all cards needed to Weave the new skin, you will also need to have unlocked the previous skin tier for the theme you are weaving for. For example, to unlock an Epic tier 2 skin you will also need to have unlocked the Rare Tier 1 skin as an additional requirement.
Please note that while you can unlock skins for heroes you don’t own, you will still need to unlock the base character to play with that skin and hero. You can unlock the base hero using ICE or Glory.
There are different ways to collect cards. You can earn them for free through playing the game. After every match there is a chance for a card drop. And as you keep playing matches the chances for Rare, Epic and Legendary card drops increase!