yugioh heart of the cards song Yu-Gi-Oh! Select and control 1 opposing monster (regardless of position) on the field until the end of your turn. YuGiOh! - Change of Heart

As a long-time player, the effect reminds me of the olden days, back when we had interrupts, which also couldn't be responded to with instants or activated abilities

Permanent that costs zero mana (Lotus Petal will be used in this example), or one that costs two mana that can produce at least one mana (Arcane Signet will be used in this example) in the hand

Once Mega Lucario ex is set up, it becomes one of the hardest hitting attackers in the format, especially against Water based decks

Since Yuga envisioned the format because he felt the game proper was stale, it's implied he designed it to work well with already existing cards

After more than 25 years of core sets released on a usually annual cycle, MTG core sets were eventually discontinued in 2021