Bug: If you buff a minion with *Rowdy Fan* and then the *Rowdy Fan* is copied, the minion will be buffed twice. Example: You play *Rowdy Fan* on your *Annoy-o-Tron.* Your opponent plays *Soul Mirror.* Now your *Annoy-o-Tron* will have 7 attack.
I don’t think test 1 is a bug. It specifically says the second card, not multiple cards. Since you jump from 1 to 3, there’s never a moment after you’ve drawn a second card
Theres a trick involving effect that say "whenever" that allows you to target a Minion on board with a Battlecry (such as Battlecry: Silence a Minion), and then return said card to your hand before the Battlecry goes off. The most reliable way, if I recall, is using Druid's sidequest. (play 10 mana worth of minions, when you do, summon a minion from your deck) Almost complete it, play Royal Librarian, which completes the sidequest, and pull Anubar Ambusher, which is activated by an on board Umbra. (When you summon a Minion, trigger its Deathrattle) Then, it returns the chosen card to your hand, all before Royal Librarian triggers its Battlecry.