The rules of YuGiOh can be found online, so we wont cover them here, but we recommend you familiarise yourself with them before you begin collecting
Mega Evolution cards work by being played on top of a matching Pokmon EX, temporarily transforming it into a more powerful Mega form with higher HP and stronger attacks, but allowing an opponent to take extra Prize cards when it is knocked out
Unfortunately, all of the Ravnica sets are rotating out, so we may not see Niv-Mizzet for a while, but theres no doubt well be back to Ravnica some day
Extra Deck 14 Stardust Sifr Divine Dragon X LIGHT Level 12 [ Dragon / SynchroEffect ] ATK 4000 DEF 4000 1 Tuner Synchro Monster + 2+ non-Tuner Synchro Monsters Must be Synchro Summoned
As a bonus, it facilitates more effective use of Electric Jellyfish and Loading
Each Kethis activation lets you replay your Opals from the graveyard, while Jace mills yourself to fuel even more activations