It may not be a simple case of summon and challenge, but rather collect, summon, buff, challenge, and recover
We prioritize cheap casting cost over everything in order to maximize how much burn we can pump out: Vines of Vastwood and Goblin Bushwhacker are two of the best for being super cheap and having good utility, but we'll pay a bit extra for useful utility cards like Breath of Darigaaz and Inscription of Abundance
As an opponent's monster with 1500 or more ATK is attacking directly, Kaiba activates his face-down "Counter Gate" to negate the attack and draw a card
Three Psychic energy is so much to ask for, especially when Psychic-type Pokemon really don't have any acceleration
Each creature you tap while casting this spell pays for or one mana of that creature's color.) You may cast sorcery spells this turn as though they had flash