This copy of the card is currently going for between $7-8
1 Idyllic Tutor
4 damage can kill a lot of utility creatures and several planeswalkers, but when done two or three times, potentially in a turn, it can kill almost any and everything
Much like the Articuno and Starmie deck structures, Lapras follows this same format, including double copies of Lapras ex for your basic Pokemon, and the rest of the deck being compiled of Support/Trainer/Item cards, such as Misty and Poke Ball
Furthermore, it is often difficult to recover from a board state without any energy on it
It's usually important for aggressive decks to have lands that can be used the turn they come into play, but with so few dual lands, A-Raiyuu is in danger of the dreaded mana screw