In the Japanese, Korean, and traditional Chinese subsets, each booster pack contains seven cards with two guaranteed Holofoil cards, and the common, uncommon, and rare cards have Mirror Holofoil variants with a Pok Ball pattern
A classic card like Show and Tell says that each player may put an artifact, creature, enchantment, or land card from their hand onto the battlefield. In this case, after Show and Tell resolves, the cards just enter the battlefield naturally, so they dont use the stack and there cant be any response like a counterspell
There were also cards that supported them, like with the current Single Strike and Rapid Strike Pokemon.) Light Toxtricity Lightning HP120 Stage 1 (Light Pokemon) Evolves from Toxel [C] Slow Ballad: Heal 30 damage from both Active Pokemon
Slicer, Hired Muscle It looks like people mostly play Slicer, Hired Muscle as a Voltron-style commander, never donating it and always converting it