Finn, Unwavering Leader is both an on demand Lightning Strike and a decent draw engine, all for one mana and another creature
Bloomburrow (BLB) #298 Illustrated by Iain McCaig Magic: The Gathering, MTG Company: Wizards of the Coast Brand: Magic The Gathering Series: Bloomburrow Item Type: Single Card Release Date: August 2, 2024 UPC: Stock #: 497992 Our Guarantees to You, Our Valued Customer
The Borg will be represented with Assimilate , which lets players put a creature on the battlefield under their control as a Borg artifact creature with a +1/+1 counter on it
Zendikar Rising Shadowmoor introduced "twobrid" hybrid mana in 2008
The aforementioned Urza deck
Cubes come in all shapes and sizes, like Power Cubes, Pauper Cubes, Mono-Color Cubes, Rare Cubes, any idea you might have for a Cube can be one