Using a something like Diabolic Intent, Grim Tutor, or Demonic Tutor to just pull your meld power out of your deck could put you way ahead of your opponent, provided you have the mana to cast both halves as well
Creatures (13) Lands (21) Spells (26) This four-color Counterbalance deck was my attempt to try to jam as many of the best cards in the format as I could into a single deck
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While Kronk's ability is fun, the card's pretty much unplayable at 7 unless you can shift him onto a cheaper Kronk
Obviously, you need at least a target to fetch before you play it, but a decently-sized flier that draws you a real card when it enters is very good in any deck
Thanks to its effectiveness in protecting creatures, Heroic Intervention is played in a staggering number of Commander decks