Enabling High-Cost Spells: Blue ramp cards allow you to cast high-cost spells earlier in the game, catching opponents off guard
Or as Caleb Compton wrote in his analysis of the game, When putting together the rules of the game, the foremost concern was not what will make the best game, but what will be most exciting for the [mangas] story. Games as Stories While Compton sees Yu-Gi-Ohs prioritization of exciting stories over good game design as a flaw, I believe that its this focus on story that is the key to Yu-Gi-Ohs success
This is achieved since this Spell Card lets you check your Main Deck to add a Monster whose sum of ATK and DEF equals your LP
Pinnacle Emissary Every artifact you cast makes Pinnacle Emissary create a flying Drone token, letting you build a growing group of fliers just by playing your normal artifact plan
I think that build might replace plaguespreader with a beetle
Drathcap Cultivator: Standard format mana dork