World Breaker Targeted Noncreature Removal
It looks like you are introducing an inferior synergy based strategy, which your drafters will likely ignore
Furthermore, the deck had an incredible win percentage, with 10 of the top 16 decks at the event abusing Nadu
Legendary Creature Shadowheart, Dark Justiciar 1B, T, Sacrifice another creature: Draw X cards, where X is that creatures power
As with other board wipes, the best way to use Sunder is to pair it with a powerful creature or other threat that is capable of winning the game on its own
If your creature has an activated ability to requires it to tap like Llanowar Elves you cannot tap it the turn it comes into play unless it has haste