[3] The Deck Masters have also been shown to be capable of other independent actions, such as when "Kuriboh" manifested itself when Yami Yugi was about to choose "Dark Magician" as his Deck Master for his Duel against Gansley
Considering Steel Leaf Champion is legal in all the same formats, it's hard not to argue you should be playing it instead, considering you don't have to jump through any hoops, and it can't simply be chump-blocked by small creatures
This is why free spells are so universally attractive, even if they actually cost multiple cards in hand or chunks of your life total those losses can be recovered or survived, so long as you get to do more stuff NOW
the "rocks" differ in shape from type to type
This shell is medium-fast with pretty high consistency, but low resiliency/interactivity
Damage dealt to creatures remains on those creatures until the cleanup step or until an effect removes that damage