Convenient Target I'm grabbing Convenient Target for my red decks in MKM drafts, and I think Red Deck Wins in Standard may like a copy or two (although it being a sorcery-speed spell is a negative)
The first is pretty simple: its a cool surprise to find cards like Ancient Tomb in a regular, Standard-legal booster pack

The First Iroan Games Enchantment Mana: Any Color CMC: Draw Color Identity: Green Commander Historic Legacy Modern Pioneer Vintage Sac Ritual Saga Token Transformer Growing Rites of Itlimoc // Itlimoc, Cradle of the Sun Land Enchantment CMC: Color Identity: Green Mana: Green Brawl Commander Historic Legacy Modern Pioneer Standard Vintage Legendary Transformer Hadana's Climb // Winged Temple of Orazca Land Enchantment Mana: Any Color CMC: Commander Historic Legacy Modern Pioneer Vintage Legendary Color Identity: Simic Transformer Utility Land Journey to Eternity // Atzal, Cave of Eternity Land Enchantment Mana: Any Color Aura CMC: Color Identity: Golgari Commander Historic Legacy Modern Pioneer Vintage Legendary Transformer Utility Land Profane Procession // Tomb of the Dusk Rose Land Enchantment Mana: Any Color CMC: Commander Historic Legacy Modern Pioneer Vintage Legendary Color Identity: Orzhov Transformer Utility Land Tutor Alternate Names: Land Tutor Cards that can search your library for land cards and put them in your hand or on top of your library

In addition to these full-art basic lands, you can find regular basic lands in Wilds of Eldraine Draft Boosters, Set Boosters, Bundles, and Commander decks
Similarly, Reins of Power can wreak havoc on the board