[BOSH] Dynamist Rex

Pendulum Effect:
(1) When a card effect resolves that targeted another “Dynamist” card(s) you control at activation, you can negate that effect, then destroy this card. This effect can only be used once while this card is in the Pendulum Zone.

Monster Effect:
(1) At the end of the Damage Step, if this card attacked: You can Tribute 1 other “Dynamist” monster, then activate 1 of these effects;
• This card can make a second attack on an opponent’s monster in a row, and if it attacks a Defense Position monster, inflict piercing battle damage to your opponent.
• Shuffle into the Deck either 1 card your opponent controls or 1 random card from your opponent’s hand, then this card gains 100 ATK.

Activate this card by targeting 1 Synchro Monster you control; (1) It cannot be destroyed by battle or by your opponent’s card effects.
(2) At the start of the Damage Step, if that monster battles an opponent’s Level 5 or higher monster: Destroy the opponent’s monster, and if you do, your monster gains ATK equal to the original ATK of the monster destroyed by this effect until the end of this turn.
(3) If that monster leaves the field, destroy this card.