Better MTG mana ramp cards are available, of course, but it's pretty nice that this works in any Magic: The Gathering color combination
15 Assorted Rares or Mythic Rares per pack
If you're more experienced, then I challenge you to focus on a new aspect of the format that you haven't yet mastered!
Even if Kaito's triggered ability triggers more than once in the same turn (perhaps because one or more attackers had first strike, multiple players were dealt combat damage by your creatures, or there were multiple combats), and you return an attacking creature to hand each time, you won't be able to activate Kaito's loyalty abilities more than twice that turn
It is just literally a rooster pecking on like a vine or something
Value can be subjective, but Magic: The Gathering cards are generally considered valuable if theyre extremely beneficial in play and/or hard to find