When any food goes to the graveyard (such as to pay the ward cost), Ygra gets bigger
If, during your declare attackers step, one of the permanents you gained control of this way that's a creature is tapped or is affected by a spell or ability that says it can't attack, then it doesn't attack
You want to minimize your vulnerability to Skullcrack and Command, which means playing your lifegain cards before turn 3
However this is a deck I alreay made for myself so it was super easy to write an article about it
Also, when it comes right down to it, Tainted Strike can be an unseen instant-win in some situations, regardless of other infect support in your deck
It featured a skull-and-bones symbol in place of the 10, and was given to players as a way to track poison counters