You also gain if you have 3 or fewer security cards when a card is removed from your security stack
Keep Koraidon EX in hand until you have multiple Energy on board, then surprise your opponent with a fully loaded attacker
When you do, put any number of target creature cards with total mana value X or less from the player's graveyard onto the battlefield under your control
There are some true Commander (not to mention Modern, and even Legacy) staples, and a good number of chase cards worth up to and above $50
Think about the creatures you can afford to reanimate (or hard cast) when designing your deck (and mana base), and also the additional utility of cards like Eureka, and how they could potentially interact with large creatures stuck in hand
Christmas has come early for Magic: The Gathering fans who may have missed a chance to buy the popular Final Fantasy Commander Decks when the fastest-selling MTG set of all time was released earlier this year