They arent a local card store with passionate employees and a connection to the community
If you did bargain and sacrifice an artifact, enchantment or token of some sort you'll cast it for free if its mana value was four or less
Despite being the mascot of the Pokemon franchise, most printings of Pikachu in Pokemon TCG are labeled as common, resulting in a higher price tag for a Rare Pikachu card
Proliferating twice is very flexible, so you can go with blue creatures that have +1/+1 counters, planeswalkers, or artifacts with charge counters
These cards usually bear a stamp on the art to identify where they came from or have a special promo star in the bottom corner, so make sure to keep your eyes peeled for these sorts of markings on your cards
First Edition Shadowless Holographic Blastoise Image from trollandtoad.com The general rule is: If its a first edition shadowless card, you may have something