Numbers 11 and 12 of the Pokémon COTD series are Glalie-EX and
M Glalie-EX. They are an incredible evolution line that can do some extreme damage.
Glalie-EX 34/162 is good on its own, but is better when mega-evolved. It does Ice Breath (flip for Paralyze), and Instant Freeze, which does 50 damage plus 100 more if you have the same number of cards in your hand as your opponent. He has 170 HP and a high retreat cost of 3.
I rate Glalie-EX a ★★★/★★★★★.
M Glalie-EX is by far better than Glalie-EX. It has 220 HP and has a retreat cost of 3. Its second attack, Cryo Mouth, does 100 damage, but if
M Glalie-EX already has 100 or more damage on it, it does 250!!
I rate M Glalie-EX a ★★★★½/★★★★★.
I rate the whole evolution line a ★★★★/★★★★★.