Shes perfect for any Water deck and can replace Potion cards with her healing ability
During the End Phase, if this card is in your GY: You can shuffle 2 Insect, Plant, and/or Reptile monsters from your GY and/or banishment into the Deck, and if you do, Set this card
The reason is that this strategy tends to just grind the game to a halt, and it doesnt really win
90% of what you need to know can be found here Edit: forgot the link m.bulbapedia.bulbagarden.net/wiki/Unnumbered_Promotional_cards_(TCG)/1996-2005 1 Like prochaos October 12, 2020, 6:20pm 5 FIXED Here are scans for the CoroCoros in order of release date up to Shining Mew if it helps you for reference
Yoshimaru, Ever Faithful
There isnt much to complain about with this card, since it not only makes an opponents monster very weak, but it also deals some damage to them, which quickly stacks up after a few turns