MArcomage

A Rare Durable Illusion that costs a mere 4 gems. This would make the Illusion effect a snap to trigger, throwing it far off balance.

This type of card is suggested rather often, one that replaces a card based on keyword. The problem with it always comes down to Wildfire gem, though Flame attack is not alone in this one.

I'd change it to only summon non-Rare to the targeted position and remove Illusion, or else keep those and lose Durable.

Now that it's not Durable, I have no problem with it. I don't mind a Rare turning Wildfire gem into Phoenix, and with its newly increased cost, it seems you wouldn't want to target that one anyway. (14 gems probably costs too much now, actually.)

Increased the cost, left the Durable keyword, and added Production x0.

Using this card on a wild-fire gem would give a 50% change to summon phoenix, a rare, which is lower than other rares (see Water ritual - 100% to get Ocean queen) and other uncommons (see Lost city - 66% to get two specific rares).

I think it's balanced. :)

By the card's text: "Replace selected card in hand with another card containing a keyword on the replaced card."

This would give a 100% chance of replacing Wildfire gem with Phoenix. There is no instance of "another card" that also has the keyword, and the way it's written excludes the target drawing itself.

But as I said, since this is a Rare, I don't mind that it can easily summon another Rare in this way.

I'm still not sure I like having this as a Durable, though the 0x production does make it less likely to be played as often for the Illusion effect as the original version.

Changed it to summon "a" card, so it could summon the same card again.