Helldozer Helldozer isnt the most efficient creature in terms of rate and size, but if you can activate twice each turn to nuke two nonbasics, maybe your opponents will be pressed to do something about it very quickly
This means that players can use Lucky, The 15th Puppy to continue grabbing those cheap puppy cards into their hands, ready to be played
Plus the idea of a giant Tinker Bell should strike fear into many, especially when she has that pout on her face
Uthros, Titanic Godcore is the blue option, letting you add blue mana equal to the number of artifacts you control (hello, Tolarian Academy), and Evendo, Waking Haven is the green Planet card, and does the same but with green mana and creatures (like Gaeas Cradle)
this is a cheap white spell that destroys target tapped creature, as well as scrying 2 if the player spent 1 blue mana to cast it