A Token copy of a Melded card (yes, you can do that - it's just big, but it's still a card) will have only the characteristics of the Melded card (it doesn't get anything from the front faces) and has a mana value of zero
You have no maximum hand size regardless of what your life total is
The most effective approach follows the traditional color pie that defines both identity and gameplay mechanics: White - The color of order and protection that focuses on efficient creatures, removal spells, and defensive strategies Blue - The color of knowledge and control that emphasizes card draw, counterspells, and manipulating the game state Black - The color of power and ambition that utilizes life as a resource, creature removal, and graveyard interactions Red - The color of freedom and emotion that delivers fast aggression, direct damage, and chaotic effects Green - The color of nature and growth that ramps mana, plays large creatures, and destroys artifacts and enchantments Colorless/Multicolor - Cards that either require no specific mana or combine multiple colors for hybrid strategies and flexible deck-building options This sets up a very simple organization system: color

Here are a few: Atarka, World Render might have more of a win-more ability, but double strike on your dragons is a legit wincon
Moving up to uncommon Gurmag Rakshasa looks like the clear pick, offering removal and a buff on an evasive body
Huey, Louie, Webby Vanderquack, Della Duck, and Gyro Gearloose all make appearances alongside Minnie Mouse, Hei Hei, Simba, and more all at a cost below four ink