Ulvenwald Tracker [Modern Masters 2017] XY197 or "Master Monk"

or "Master Monk"

You can only use this effect of "Booster Dragon" once per turn

you can activate this card's effect by revealing 1 Fusion Monster from your Extra Deck and sending 1 of the Fusion Material Monster listed on that card from your Main Deck to the Graveyard

Their ATK's become 0

The equipped monster can attack directly

Ulvenwald Tracker [Modern Masters 2017] XY197 or "Master Monk"Set: Modern Masters 2017 Type: Creature Human Shaman Rarity: Rare Cost: {G} {1}{G}, {T}: Target creature you control fights another target creature. "Peace will come to Innistrad, but only after all abominations have been dealt with, one by one."