black yugioh card YU-GI-OH! - Illusion (YGLD-ENC00) - Yugi's Legendary Decks - Limited Edition may be 1st or Unlimited Edition YuGiOh Maximum Gold: El Dorado

This type of effects can either be a way to balance the power of your Pokmon or part of some mechanic aimed to make them more effective (for example increasing the damage of their next moves)

Sitting back on a steadily growing board, drawing cards, and pumping your team sets you up well

Not including the static ability ones from War of the Spark that only had one minus ability, only Ajani, Caller of the Pride, Gideon Blackblade, Teferi, Time Reveler, and Vivien, Champion of the Wilds have at least 4 starting loyalty

If you don't, you spent six mana to barely make an impact, and if you do, you could have just won without it by casting another creature instead