Sphere of the Suns enters the battlefield tapped and with three charge counters on it.
, Remove a charge counter from Sphere of the Suns: Add one mana of any color.

First strike
Other Vampire creatures you control get +1/+1 and have first strike.

First strike
Noncreature spells cost more to cast.

, Sacrifice an artifact: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Whenever you gain life, put a +1/+1 counter on Twinblade Paladin.
As long as you have 25 or more life, Twinblade Paladin has double strike. (It deals both first-strike and regular combat damage.)

Target player mills four cards. (Then exile this card. You may cast the creature later from exile.)

Volt Charge deals 3 damage to any target. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)