Gemstone Array

This artifact enters tapped.

: Put a charge counter on this artifact. Add X mana of any one color, where X is the number of charge counters on this artifact.

, Remove a component counter from this artifact: Add two mana of different colors.

: Roll a d20.

1—9 | Put a component counter on this artifact.

10—20 | Put two component counters on this artifact.

: Add one mana of any color.

: Put a charge counter on this artifact.

At the beginning of your first main phase, remove all charge counters from this artifact. Add one mana of any color for each charge counter removed this way.

Whenever a Dragon you control enters, put a gold counter on this artifact.

, Remove a gold counter from this artifact: Draw a card.

: Add one mana of any color.

Converge — This creature enters with a +1/+1 counter on it for each color of mana spent to cast it.

Remove a +1/+1 counter from this creature: Add one mana of any color.

: Put a +1/+1 counter on this creature.

, : Put a charge counter on this artifact.

, Remove X charge counters from this artifact: Add an amount of equal to X plus one.