From Anje Falkenrath to The Infamous Cruelclaw, passing through red cards like Bedlam Reveler and the like
Even the common Pokemon like Pikachu and energy cards can fetch pretty high prices by collectors

Rally at the Hornburg In 80% of 55 decks +74.6% synergy In 80% of 55 decks +74.6% synergy Westfold Rider In 72.7% of 55 decks +70.4% synergy In 72.7% of 55 decks +70.4% synergy Protector of Gondor In 69.1% of 55 decks +68.2% synergy In 69.1% of 55 decks +68.2% synergy Haradrim Spearmaster In 67.3% of 55 decks +66.5% synergy In 67.3% of 55 decks +66.5% synergy Errand-Rider of Gondor In 65.5% of 55 decks +64.2% synergy In 65.5% of 55 decks +64.2% synergy Quarrel's End In 67.3% of 55 decks +64% synergy In 67.3% of 55 decks +64% synergy Dnedain Blade In 56.4% of 55 decks +54.7% synergy In 56.4% of 55 decks +54.7% synergy Rohirrim Lancer In 52.7% of 55 decks +51.9% synergy In 52.7% of 55 decks +51.9% synergy Perimeter Sergeant In 50.9% of 55 decks +50.3% synergy In 50.9% of 55 decks +50.3% synergy Cathar Commando In 65.5% of 55 decks +50.2% synergy In 65.5% of 55 decks +50.2% synergy Relentless Rohirrim In 49.1% of 55 decks +48.7% synergy In 49.1% of 55 decks +48.7% synergy Now for Wrath, Now for Ruin

At first glance, the overwhelming success of Pokmon Card 151 [SV2a] might seem to be an instance in which Creatures Inc
Negate is one of the best answers to Aetherworks Marvel because it isn't conditional like Censor and can also hit Gideon, Ally of Zendikar, Heart of Kiran, and Liliana's Mastery
Penny sleeves are the most affordable option at 64 x 89mm