One card giving you the option of a second copy of your best creature late in the game versus a land early is absurd enough that this often makes the cut in my blue deck regardless of whether my strategy cares about clones
Legendary Creature - Zombie God Henzie "Toolbox" Torre Each creature spell you cast with mana value 4 or greater has blitz
That player can then either do something or pass priority, to which their opponent(s) can respond or let the items on the stack resolve
C Common Breath of Resurrection X TRAP If you control an "Adventurer Token": Special Summon up to 2 monsters from your hand and/or GY with different names (but banish them when they leave the field), then you can equip 1 Equip Spell that mentions "Adventurer Token" from your hand or GY to 1 monster you control
I think there are better ways to use Decayed tokens and Disturb creatures, plus this is vulnerable to instant-speed removal, but its still a massive threat on its own
Hallowed Haunting Hallowed Haunting creates a Spirit Cleric token when you cast an enchantment spell