Five mana is a lot for this sort of ability, however
Ludicolo Ludicolo is a stage 2 100 HP pokmon that belongs to the EX Deoxys expansion and provides players with the unique ability to stack cards on the top of their decks as and when they please with the help of abilities such as Swing Dance and Healing Steps
Incapsula incident ID: 1537000680196644920-83891088032600330
Whether it alters another just might depend on what happens next
It's awesome-bringing out a Archfiend Heiress or Fiendish Rhinox nets you an "Archfiend" card/Burning Abyss/Fabled Kushano mill and Ally of Justice Catasor/Armades, bringing back a (NOT Mega) Monarch Caius or Angmar (yes, people use him) to go into Omega, bringing in a ....okay, you've probably heard this all before in your head while making this, lemme kick this up a notch
Because of this, their support cards have to be more powerful than other archetypes to even give them a chance at relevancy