Within the narrative of the mainline games, Dialga is part of the creation trio alongside Palkia and Giratina, each representing different fundamental aspects of the universe: time, space, and antimatter, respectively
Check out Hong Fei Yeung undefeated deck from Worlds 2007: "G/U Faeries" Creatures (28) 2 Wall of Roots 3 Mistbind Clique 3 Pestermite 4 Birds of Paradise 4 Mystic Snake 4 Scion of Oona 4 Scryb Ranger 4 Spellstutter Sprite Spells (9) 1 Remove Soul 2 Psionic Blast 4 Rune Snag 2 Loxodon Warhammer Lands (23) 6 Forest 6 Island 2 Treetop Village 3 Faerie Conclave 4 Yavimaya Coast 2 Pendelhaven Sideboard (15) 4 Flashfreeze 2 Naturalize 2 Pithing Needle 3 Sower of Temptation 3 Spectral Force 1 Vesuvan Shapeshifter Mystic Snake fulfills a similar role to the one Snapcaster Mage plays today, albeit a more limited one
And if you looking for good alternate example, check our alters database that doesnt have these forbidden modifications
This hits a bit harder than Blast but is twice the price and needs you to sac something
If you want to go the best storytelling route, combine the Hand, Eye, and Book of Darkness to create the actual Vecna, an 8/8 indestructible Zombie God that gets the triggered abilities of all three
Creature Artifact - Construct Myr Phyrexian Triniform When this creature dies, create three 3/3 colorless Phyrexian Golem artifact creature tokens