Discard lands if you have enough mana, discard spells to grow your creature, or discard reanimation targets and madness cards for additional value
While there is no hard-and-fast rule of how your deck breakdown should look, a good rule of thumb is 15-20 Pokmon cards, 15-19 energy cards, and 15-20 Trainer cards
Hullbreaker Horror You'd think for a Kraken Horror wouldn't be a very strong card, but bouncing permanents and spells is a solid effect
Any monster equipped with this card gains at least 1500 ATK the innate 1000 ATK plus 500 ATK/DEF for that used Dragon, and every additional Dragon grants another 500 ATK/DEF
(2025-06-06) If you control two Traveling Chocobos, a land or Bird you control entering causes abilities to trigger three times, not four
It also helps that it is incredibly valuable, as a mint condition Mewtwo will sell between $4,000 and $5,000