But a card with Flying or Reach in addition to Defender absolutely can
Conclave Sledge-Captain BPhillipYork: 3 instances of backup 1 means you can have 1 creature get a lot of +1/+1 counters on it, if you used all 3 on Shalai and Hallar it would deal 1 damage to an opponent 3 times, then when you swung through it would then deal an additional 6 + 6 + 6 damage (sadly all the instances would go on the stack at once) though if you had double strike you'd get 6 + 6 + 6 and then they'd be 21/21 and another 3*21 damage, meaning you could do 27 combat damage to one player, 3 instances of 21 damage, and 3 of 6 damage, which is 18+21 = 39 and 42 and the person you attacked is dying to Commander damage
If theres a guy with an Avacyn in his binder that he values at $10 (currently $16), and he gives you $6 on your Rakdoss Returns (currently $5.75), then you can easily get his Avacyn for your two Rakdoss Returns
Card Details Stage: Basic [1] Fire Punch 10 [1R] Smog 20 The Defending Pokmon is now Poisoned
Extended (that's no longer a supported tournament format, but you could still be playing it at the kitchen table, right?) Rainbow Stairwell
The +1/+0 bonus of Eager First-Year is nice, but let's face itsometimes you're in the market for something a little more impactful