This deck holds 15 cards in it, as a action you may draw one card from the deck, if you do the card disappears and a monster appears, friendly to you for 1 hour . You can talk telepathy to the creature. The DM may either choose a monster or roll on the Deck of Monsters Table.
Deck Of Monsters:
1: 1 Ankheg
2: 1d4 Imps
3: 2 Cockatrices
4: 1d4 Death Dogs
5: 1d8 Stirges
6: 2 Owlbears
7: 1d10 + 2 Monodrones (without the axiomatic mind ability )
8: 1d6 Mephits (any kind)
9: 1 Werebear (hybrid form)
10: 1 Lizardfolk Shaman and 1d4 Lizardfolk
11: 1 Kuo-Toa Archpriest
12: 1d8 Hook Horror
13: 1 Hobgoblin Warlord and 1d4 Hobgoblins
14: 1d8 Hell Hounds
15: 1d8 Basilisks
16 1 lvl10 Necromancer Wizard
17: 1 Behir
18: 1d4 Cloakers
19: 1 Storm Giant
20:1 Ancient Gold Dragon
I added this to the game I'm DM, but the cards wont disapear after use. The players gave me some feedback in order to help balance it into the game, saying that it could work like the druids hability of incorporate an animal, and the deck user's body should stay vulnerable while its mind would be on the monster (or monsters). Another idea would be a turn for recovery, like if the body couldnt handle the power of invocation of the monster, and a daily limit for summonation