When your opponent Normal or Special Summons a monster(s) while you control no monsters (except during the Damage Step): You can Special Summon both this card from your hand and 1 "PSY-Frame Driver" from your hand, Deck, or Graveyard, and if you do, add 1 "PSY-Frame" card from your Deck to your hand, except "PSY-Framegear Alpha"
For example, even if the effect of "Cannon Soldier" is negated by "Effect Veiler", it can still be activated by Tributing a monster, but its effect will be negated when it resolves and the opponent will take no damage
When Legacy Energy is attached to a Pokemon, it gives that Pokemon every type of Energy but only one at a time
Waterfront also has amazing synergy with Baler because it protects itself
Opening a box for a specific named SAR rarely works out cheaper than buying the single