Without a bench barrier ability to stop it, G-Max Rapid Flow can damage anything on the board at will
Others, such as Dragon Star or Card Labo, also provide extensive table setups for players to duel with others, and often host their own tournaments and events to encourage players to meet and play
It copies all triggered abilities of the chosen creature type, not just ETBs, which opens up so many more interactions than the average Panharmonicon effect
When you summon Orichalcos Kyutora, you will have to pay 500 life points
While we have more than enough actual slivers to choose from, there are a few changeling cards that might be considered: Mutavault, Shields of Velis Vel, Amoeboid Changeling, Blades of Velis Vel, Shapesharer, Mirror Entity, Taurean Mauler, Chameleon Colossus