(It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.")
There are so many +1/+1 counter synergies these days that its incredibly easy to make an oppressively powerful deck with that strategy, and I personally dont like the mental energy required to keep track of all the various triggers those strategies accumulate on the battlefield
Ifrit The Lord Master of Hell The Speed Demon Tragedy Feaster Valgavoth, Terror Eater Vile Mutilator Vito, Fanatic of Aclazotz
For example, if Vincent's power was 7 when it dealt combat damage to an opponent but is reduced to 6 just before its last ability resolves, it won't deal any additional damage when the last ability resolves
If you can hardcast it and your deck is capable of holding off Burn and Abzan decks on its own, you'll find this very powerful whether it's in the opener or not