It can give itself lifelink so you can get some quick and easy life, it can give another powerful creature lifelink for even more quick and easy life, or it can give a blocked creature deathtouch so it's guaranteed to take a creature down
On top of that, my girlfriend likes to buy boosters from random sets sometimes which we draft in-house, before dividing up those cards between the two of us
Toss on a Sword of anything and your opponents are sweating
Puresteel Paladin + Sram, Senior Edificer Puresteel Paladin and Sram, Senior Edificer are incredible card draw engines
Doctor's companion (You can have two commanders if the other is the Doctor.) If you choose no target for Ace's Nitro-9 ability, you will put a +1/+1 counter on it
Red is the best mana acceleration color, giving out huge one-time bursts of mana for a comparatively low up-front investment