The reason he is good is that he does a lot of work in the control match disrupting and posing as a threat while he is still a great tempo play against an aggressive player
you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Cyberse monsters, also Special Summon this card from your hand (but it cannot attack this turn), and if you do, the targeted monster loses 1000 ATK until the end of this turn
the popularity of this card has skyrocketed even before the set was released, when the card was first revealed to the community
Cleffa exemplifies this through its requirement for high friendship to evolve, encouraging players to nurture and bond with it
Its a 5 mana investment for a 4/4 that gives your team haste and forces your foes to have their creatures arrive tapped
Kumongous, The Sticky String Kaiju is a powerful answer to any monster you just need to get rid of