Let’s take a quick look at the new Druid card, Moonglade Portal and the potential outcomes of the RNG attached to it. This is done with only standard in mind and cards in the Wild format have not been considered.
Generally speaking, cards with a battlecry attached to them are not desirable from this card as battlecries are not triggered when summoned from a portal. The best drops are generally deathrattle or similar high-value/high stat minions. Some of the minions are a lot more desirable in certain positions but this is impossible to account for so we will generally only be considering raw stats and disregarding situational outcomes.
The best drops you can get are :
Cairne Bloodhoof, Emperor Thaurissan, Hogger, Sylvanas Windrunner, Argent Commander, Savannah Highmane, Sunwalker, Dark Arakkoa.
There is a 16% chance of getting one of these cards.
Bolf Ramshield, Illidan Stormrage, The Skeleton Knight, Mysterious Challenger, Sea Reaver, Skeram Cultist, Drakonid Crusher, Dread Infernal, Lord of the Arena, Temple Enforcer, Boulderfist Ogre, Reckless Rocketeer, Coldarra Drake.
There is a 24% of getting one of the above drops.
Herald Volazj, Mukla Tyrant of the Vale, Reno Jackson, The Beast, Ancient Harbinger, Grand Crusader, Scaled Nightmare, Sideshow Spelleater, Master Jouster, Mogor’s Champion, Wobbling Runts, Thing from Below, Faceless Summoner, Fire Elemental, Frost Elemental, Archmage, Volcanic Drake.
There is a 32% chance of getting an average minion.
Justicar Trueheart, The Black Knight, Cabal Shadow Priest, Kodorider (This could be higher if you have mana to trigger it’s inspire), Gadgetzan Auctioneer, Void Crusher, Priestess of Elune, Windfury Harpy, Book Wyrm.
You have a 17% chance of getting these cards.
The Mistcaller, Wilfred Fizzlebang, Kidnapper, Nerubian Prophet, Ivory Knight.
9% chance of getting one of these cards
Incredibly bad value:
Luckily you only have a 2% chance of pulling this murloc.
Is it worth it?
While I am not sure if this card will become a staple addition to druid decks, the chances of pulling an average to above average card are way higher than the chances of summoning something with low value. However, the heal component is only 6 points of healing which is the same as a 2 mana holy light. In essence you are paying 4 mana for a random 6 drop. This seems to be worthwhile but it might be better to simply play more high-value minions unless you are finding yourself in need of healing.