Ahli never had the thought to check his used pile as he assumed after his units were hit by Carta, they would be destroyed immediately. Well, the pressure given to him from the opposing side also made him not have any time to properly check, as he kept on thinking what would be best for him to counterattack from the options that he got in his hand.
Thus, the return of Queen of the Forest and The Corpse Puppeteer was a surprise for him. Even though, that surprise would be overridden by the fact the two did not come alone, as multiple turns had passed and units of numbers exceeding those of Anzu's were there, ready to hold Anzu's attack.
QUEEN OF THE FOREST
3+Wood Mana+Wood Mana+Wood Mana
[Hero Unit - Plant]
At the beginning of your turn, create a 1/1 plant unit for each plant unit you control.
X+Wood Mana+Wood Mana: Queen of the Forest gets +X/+X until end of turn.
2/2
Mana: -
THE CORPSE PUPPETEER
1+Earth Mana+Earth Mana