Devour + Banner of Command.

So, there's an interesting bug with Tahm's W and a BoC'd minion. Both occurrences of this were in the same normal game, and both occurrences were on cannon minions. I've yet to test to see if this will work on regular minions or not. (The cannon minions were blue, if that matters.)

The enemy Soraka built BoC, and promoted a cannon minion. Nothing unusual. Once it got to our mid inhib turret (We were losing badly, we couldn't leave base without getting caught out and annihilated), our entire team wailed on the minion.

1. At one point, Tahm tried to W the promoted minion. The minion flew towards tahm, but not in his mouth. I'm assuming this is intended.

2. The promoted cannon TOOK DAMAGE from Tahm's W.

3. The rest of my team and I (as Akali, Caitlyn, Fiddlesticks, and Cho) smacked the minion around until it got to 1 health. Normal minion behavior.

4. Once it hit 1 HP, it became immortal for about 10 seconds. While we all smacked it, its HP never dropped below 1. It just walked into the base and shot the inhib a few times before the "immortality" wore off and it died to some random AA.

I don't have a picture, but the best way to describe it would to compare the "immortal" minion to the ones that auto-spawn if a game lasts too long. Google the world record for the largest amount of Veigar (maybe nasus, I'm not sure) stacks, iirc that video ends with immortal supers swarming the base.

EDIT THE FIRST: According to another post, it's a bug with tahm's W, not BoC. Apparently, if Tahm Devours a minion but presses W to spit it out before the minion actually reaches his mouth, the minion because immortal. Huh. The more you know~

Thanks for reading! ~Dome