Lifegain is super easy in white, and recursion is a powerful mechanic, so this card has a potentially strong effect right off the bat
Then again thats only my opinion, maybe you guys like them and may see them as fair and playable as any Yu-Gi-Oh card, or maybe not
Therefore, if you've got a Deck of 40 cards, around 20 should be Monster Cards
There are a multitude of different artifact decks that can make excellent use of its abilities, particularly that third one, and it may well allow for some truly nauseating combos
The Moxen were not interesting for a 10 year old (fancy lands), neither was Timetwister (an expensive Wheel of Fortune), or Ancestral Recall (card draw was very meh), but Time Walk seemed like the most amazing card ever printed
Flying Pikachu VMAX #24 Pokemon Japanese 25th Anniversary Collection Keep track of your collection value over time