You can Tribute 3 monsters to Tribute Summon (but not Set) this card
In Commander, where lifegain is plentiful and the starting total is so high, that isn't a big deal
Going second can be advantageous in these matchups
This means you can negate one damage done to this card each time it is involved in a challenge or an action does damage to it, and Support lets this card give its strength to another one of your characters when it quests, until the end of the turn
-Turbo Booster and Boost Warrior (I like these cards in case you are unable to get a Doppelwarrior to the GY) -Necroid Synchro (not a great card for opener, but I find it useful to get Shooting Star Dragon out) -Shard of Greed (two turns is too slow in today's Yu-Gi-Oh I'm learning) -Martial Metal Marcher (Tatsunoko seems to the popular 3 star synchro tuner, I will test out to see which I prefer), -Armory Arm ( probably better 4 star synchro monsters out there, my nostalgia for the card keeps it in the deck for me
Despite this slight bit of lackluster synergy, Energy Chamber is still an incredible upgrade