I see all your two card merges and raise you a third.
Talismandarinn - Treasure - $5
+$3
discard two cards
put a card from your hand on top of your deck
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While this is in play, when you gain a card costing $4 or less, gain a copy of it.
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When you gain this, look through your discard pile, reveal any number of action cards and shuffle them into your deck. Then put all treasures in play on top of your deck.
Apprenticellarmory - Action - $5
+1 action.
Trash a card from your hand and discard any number of cards then gain a card costing up to $4, putting it on your deck. Draw cards equal to the cost in $ of the trashed card, plus the number of discarded cards, plus two if it had a potion in it's cost.
Secret Chambassadoracle - Action/Reaction - $3
Look at the top two cards of your deck. Choose one: Discard any number of them, $1 per discarded card; OR reveal one of them, return up to two copies of the looked at cards to the supply and each other player gains a copy of it. Put the remaining cards back in any order.
+2 cards
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When another player plays an attack card, you may reveal this. If you do, +2 cards then put two cards from your hand on top of your deck.