The "And" is what is scary about this card and Zoobot. If really buffs 3 minion possibly and if someone actually manages to create a good aggressive murloc, beast dragon deck, it could lead to some crazy shenanigans.
What people fail to understand is that you don't need to buff three creatures for this card to be insane. Just one, and you get 6/6 worth of stats for 5 mana. A beast + a dragon, that's 8/8 for 5. It's stricly a better anubisath, since battlecry trumps by a long shot deathrattle for allies buff.
5 mana 10/10 worth of value dream. the card will see play. there's now 5 copies of card that draw's or buff dragon's murloc's and beast's, and there are good dragon's and beast's and you could add the 6 mana 2/3 boar clear murlock. the card is kind super situational in arena. if you can guarantee 5 mana 6/6 worth play is ok if not is bad.
Even if this card only buffs 2/3 of the 3 that's still good value. I think there will end up being a viable or at least semi-playable beast/dragon druid or dragon/murloc paladin or something that can get a lot of value from these new cards.