Once the ability is activated and the cost is paid, it's too late to stop the ability from being activated by trying to remove the creature card from the graveyard
You can only use this effect of "D/D Ark" once per turn
giving your opponents cards and mana sounds dicey, and it certainly has no legs outside of Commander
The other problem is it is a 7-cost uninkable card that doesn't do anything the turn it is played
Acceleration Zone Advance Draw Advance Force Agent of Hatred Altar of the Bound Deity Ancient Fairy Dragon Ancient Forest Anti Emptiness Archfiend General Archfiend Soldier Armory Arm Ashoka Pillar Assault Dog Attack Pheromones Axe of Despair Basara Baton of the Hero Battle Fader Battle Mania Battle Teleportation Battle Waltz Bending Destiny Big Piece Golem Black Garden
Pendulum Summon rule effects, Xyz summoning with Xyz gives you the right to attack twice, the effect of bouncing the opponent's field to strengthen itself, and the effect of placing it on the scale when destroyed, all powerful effects on parade