Problems with a Couple of Cards

[The Cubist]

Just tonight I noticed a problem with how FORGE handles a couple of cards:

Ulamog, the Infinite Gyre

When Ulamog, the Infinite Gyre is cast, destroy target permanent.

I received no such prompt to destroy a permanent (it cast like any creature spell) which is kind of a bummer since I was counting on it. I didn't cast this under any unusual circumstances.

Wurmcoil Engine

When Wurmcoil Engine dies, put a 3/3 colorless Wurm artifact creature token with deathtouch and a 3/3 colorless Wurm artifact creature with lifelink onto the battlefield.

This worked, but instead of one of each (2 total creature tokens), FORGE generated 2 of each. I'm not sure if this makes a difference, but Wurmcoil Engine was put into the graveyard under somewhat unusual circumstances. I had a Wurmcoil Engine on the battlefield, as well as a Kiki-Jiki, Mirror Breaker, which says Tap: Put a token that's a copy of target nonlegendary creature you control onto the battlefield. That token has haste. Sacrifice it at the beginning of the next end step. So I tapped Kiki-Jiki, made a copy of Wurmcoil Engine, attacked with the copy of Wurmcoil Engine, and once it was sacrificed, a total of 4 tokens popped up - 2 3/3 with lifelink and 2 3/3 with deathtouch, instead of just 1 of each as the card says. The original Wurmcoil Engine was still in play, and it never went to the graveyard, so I don't know if the game handles the "real" card differently than the "token copy" or if it's just a simple fluke, or if having two Wurmcoil Engines confused it.

Mox Diamond

Tap: Add one color of any mana to your mana pool.

Occasionally, I would say roughly 30% of the time, when I tap Mox Diamond, I don't get the prompt allowing me to choose a color. Instead, it defaults to white. This also happened once with Lotus Petal, and since I couldn't undo the sacrifice, I couldn't get the correct color. Fortunately with Mox Diamond, I can click "undo" to undo the tapping, and then when I re-tap, usually I receive the prompt to choose a color. Still something worth fixing.

Karn Liberated

+4: Target player exiles a card from his or her hand.

Quite frequently, yet not all the time, I'm not given a chance to target my opponent, and I'm automatically prompted to exile a card from my own hand immediately after choosing the +4 option.

I hope to see you guys patch these up soon!

[friarsol]

Please check out the link in my signature, while you do have some good information here, it's unclear what version you are using and in some cases, what other cards might be interacting (like with Karn) to cause what you are seeing.