There was genuinely a time when base set was worth almost nothing & guys like Gary can attest to that cause they were the very few that capitalized on that
Skirk Prospector Im trying not to cover every single kindred staple in the set since theres way too many type-specific playables to cover them all, but Skirk Prospector is about ubiquitous as a card can get in Goblin decks
On arrival to the battlefield, it will counter any instant, sorcery or ability
Sadly, it never got enough support to make it viable, plus with enough sets, it ultimately got power-crept by other better red leaders
You can draw most of your deck with Ad Nauseam, use Lion's Eye Diamond alongside Underworld Breach to generate loads of mana to recast cards from your graveyard, and use the rest of your cards in your graveyard to draw out your deck that way