It works because it’s on YOUR turn. Overkill only doesn’t work when being attack on your opponents turn
https://www.youtube.com/watch?v=PSvBykSpsZI&feature=youtu.be&t=221
It does work, it’s been tested
On a further note, you can also work a regular KO in standard just with BEEEES!!! and Linecracker if you play it, your opponent doesn’t remove it, then just use BEEEES!!! on it next turn and hit them for 80 dmg
There are also interactions with Ironhide Direhorn and Oondasta
Ironhide Direhorn
- Play Ironhide Direhorn and cast BEEEES!!! on him.
- **Summon 2x 5/5 Ironhide Runt
Oondasta
- Play Oondasta, 2x Innervate or 1x Innervate + 1x Coin and after cast BEEEES!!! on her.
- Summon up to 3 Beast from your hand! (If you attack with Oondasta and overkill an opponent minion.)
or
- Play Stampeding Roar and “randomly” hit Oondasta, cast BEEEES!!! on her.
- Summon up to 3 Beast from your hand! (If you attack with Oondasta and overkill an opponent minion.)
or
3. Play Dreampetal Florist and “randomly” hit Oondasta
- Play Oondasta and cast BEEEES!!! on her
- Summon up to 3 Beast from your hand! (If you attack with Oondasta and overkill an opponent minion.)
or
- Play Oondasta and get her killed.
- Play Witching Hour and cast BEEEES!!! on her.
- Summon up to 3 Beast from your hand! (If you attack with Oondasta and overkill an opponent minion.)
- (Don’t forget that 1/1 Bees are beasts too, so you need to wait for the combo!)
There are a LOAD more other interesting interactions you can use BEEEES!!! for
Card Draw:
Play Ticket Scalper or Acolyte of Pain and use BEEEES!!! on it. Or play Cult Master and cast BEEEES!!! on another minion.
Minion summoning
Play Underbelly Ooze or Dragon Egg Or Hogger, Doom of Elwynn (Wild only) and cast BEEEES!!! on it
Buffing
Can be used on Gurubashi Berserker to buff it. Bees can be buffed by Addled Grizzly, Raid Leader, Dire Wolf Alpha, Stormwind Champion to take down big minions.
Deathrattles
Trigger any upto 4 health minions deathrattle
Card Generation
Mech Bear-Cat generates spare parts when attacked. Witches Cauldron generates cards when the BEEEES!!! die attacking another minion.
Cost reduction
There are several cards that reduce their own cost when another minion dies while they are in your hand…Volcanic Drake, Corridor Creeper, Volcanic Lumberer.
Mana Crystals
Play Floop’s Glorious Gloop and play BEEEES!!! to, hopefully, kill an enemy minion and gain 4 mana crystals for that turn when the 4 bees die
The possibilities for this card are RIDICULOUS