It lets you draw cards, helps you keep mana up to cast counterspells, removes threats from the battlefield and eventually gives you an emblem that lets you exile everything your opponent controls
Like most Magic: The Gathering cards, the value of Energy Tap depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Fourth Edition Foreign Black Border)
Settle Beyond Reality I think for the draft format this was part of, five mana probably kept this a little lower in the pick order than it could have been, but Settle Beyond Reality is an example of White removal that gives a good upside
Take the focus on lands and apply it to landfall on Avenger of Zendikar, +1/+1 counter support in Defiler of Vigor, and Allosaurus Shepherd is huge as an enemy of blue
Lurking Predators This card rewards you for simply existing in multiplayer games
Creature - Warrior Mutant Commander (CTRL to add secondary) Blink Blink (CTRL to add secondary) Bounce Bounce (CTRL to add secondary) Cycling Twisted Abomination : Regenerate this creature