The problem I have with Daze against Ichorid, even on the play, is that giving up the land drop is as bad as most of the things you'd try to counter.

When Ichorid sees an Island in front of them on the draw and know that you have Daze in the deck they generally slow play to turn 2, often to the point of just drawing a card and discarding what they want into the GY. Dazes can have an impact but only if they are very sloppy about setting up. An Ichorid player who plays Putrid Imp into an Island on turn 1 deserves to get caught with 6 cards in hand and no discard outlet. It's just much sounder for them to either drop a land and pass, playing Putrid Imp and rolling on turn 2, or discard the card they want into the graveyard and waiting to drop a land until turn 2.

Really I think it's hard to go wrong though once you have sided for Ichorid, it's just a very favorable matchup at that point and Daze or no you're probably going to have a good chance to win. The graveyard hate is just so good at this point that it's hard to win through it.