xerneas break pokemon card - 82/114 - Steam Siege [YY] Life Stream (20x) This attack does 20 damage times the amount of Energy attached to all of your Pokemon. Xerneas BREAK | XY—Steam Siege

This deck has access to a few different payoffs that give the Birds deck a true identity

[source gonintendo.com]

To be clever, Hythonia's original text dealt 1 damage to all the creatures, and since it had deathtouch, that 1 damage was lethal

To move counters from one permanent to another, the counters are removed from the first permanent and put onto the second

Fungal Shambler D+ Another card that's hurt by it's high CMC, Fungal Shambler also suffers from a relatively low toughness for EDH considering that mana cost

You can also remove the unblockable ability with cards like Dress Down and Humble before the declare blockers step