Here is the full list of all 27 Pox Nora trophies - there are 12 bronze, 8 silver, 6 gold and 1 platinum.
Obtain All Trophies
Reach Limited League in either the 1v1 or 2v2 Ladders
Win 40 Ranked Games
Reach Rare League in either the 1v1 or 2v2 Ladders
Complete a full set of Heroic Quests before time runs out
Win 20 Ranked Games
Win a Ranked Game with a Forglar Swamp deck
Win a Ranked Game with a Forsaken Wastes deck
Win a Ranked Game with a K'thir Forest deck
Win a Ranked Game with a Ironfist Stronghold deck
Win a Ranked Game with a Sundered Lands deck
Defeat 10 Solo Play Campaigns on Legendary difficulty
Win a Ranked Game with a Shattered Peaks deck
Win a Ranked Game with a Savage Tundra deck
Win a Ranked Game with a Split Faction deck
Win a Ranked Game with a Underdepths deck
Defeat 5 Solo Play Campaigns on Legendary difficulty
Defeat 3 Solo Play Campaigns at any difficulty
Win a Match where both players have transfigured Avatars
Win 5 Ranked Games with at least 3 Legendary runes in your deck
Win 5 Ranked Games using a deck with no duplicate runes
Kill an enemy relic with a spell
Win a Ranked Game with an Exotic rune in the deck
Win a Ranked Game with a Legendary rune in the deck
Kill 5 Enemy Champions with a Transfigured Avatar
Play 5 Custom Games
Kill an enemy champion with a spell