My good friend PapaZedruu has written a rather excellent Primer on Henzie, and in it, he looks at calculating these exact odds
If you need to catch up, this set is ideal
However its cumbersome charge moves leave Ho-Oh in a difficult spot when shields are available and it doesn't have a typing advantage
Kaalia lets her controller cheat on mana and get those creatures into play as early as Turn 4 (without ramp and with a Haste provider, like Lightning Greaves) and even sooner with mana acceleration, like Sol Ring
3 Irida The Ultimate Healing Card The Pokemon TCG Pocket app is drowning in Water-type support
There are also occasional misprints for specific languages, the most notorious being Spanish Meloku, who makes 2/2 tokens, instead of 1/1s (because that card wasnt good enough already)