Ultra Tackle is an alternate ability for All-Star's Sprint Tackle ability. It has a faster speed, longer range and deals higher damage, at 90 damage compared to 75 damage from the regular Sprint Tackle. It takes 45 seconds to recharge, 15 seconds longer than the original ability.
Isolating himself in the Zen Tackle Tower for 5 years, the All-Star tried to master the art of tackling stuff. End Result? A more damaging tackle! But it can't be used as frequently.
The only downside to this ability is that it takes longer to recharge than the standard Sprint Tackle, but it does more damage and has a longer range, allowing multiple enemies to be hit. This makes it more optimal from vanquishing foes, especially Sunflowers, Cacti, and Roses. Before you use this ability, try and spread the damage around to weaken some plants, then use it. In 1 vs. 1 situations, if you're about to be vanquished, use this as a last resort option. If you're near Citrons, Roses, or Chompers, you may want to use this ability as soon as possible to avoid getting stunned and vanquished. Usually, if you are in a team fight and there is a line of plants, using this will net many vanquishes.