King's Hopeful Gleam (CST-077 SR) [Clash of the Star Trees]

Draw two cards. J/resonators you control gain [+800/+800] until end of turn. [Seal] (X), where X is ten minus the number of Seven Kings rulers you own revealed outside the game. (As you play this card, if you control X or more magic stones, this card is played with the following text, where X is ten minus the number of Seven Kings rulers you own revealed outside the game.) You pay 0 rather than pay this card's cost if this is the first spell named "King's Hopeful Gleam" you play this turn. Put a [1000/1000] light/fire/water/wind/darkness Avatar resonator token into the field.