For example: If a card has a Fairy-type weakness or energy requirement, it's from the XY or Sun & Moon era The specific design of energy symbols has changed slightly over the years, which can help with era identification Darkness and Metal energy were introduced in the Neo era
"Breath of Resurrection" (a Normal Trap) is the only in-theme card that can recover Adventurer monsters in GY, though it caused the revived monsters to be banished when they left the field, effectively disabled the utility of various Adventurer monsters
ETB-focused spells like Reality Shift, Diabolic Tutor, and Grixis Charm control and value spells to dominate the board and dig for your best pieces
If you have no deck left and then use Uxies attack with 4 PlusPowers for 60 damage, the bottom of your deck becomes the top of your deck, so each turn you can draw the Uxie you just attacked with, play it down to use its Pokmon Power to draw the PlusPowers, attack for 60, rinse and repeat
A perfectly centered card has equal border width on all four sides
If you flipped 2 heads or more, your opponent's Active Pokemon is now Paralyzed