The third effect is exactly what you expected, but another gets a significant buff.
RD/VP02-JP001 Dairengekiryuu Dragias Burst [L] / Great Multistrike Dragon Dragias Burst[L]
LIGHT/Dragon/Maximum/Effect
Level 7 1500/0
[Requirement] Maximum Mode: Send the top card of your Deck to the Graveyard.
[Effect] This card can attack monsters 3 times this turn. Shuffle this card into the Deck during the End Phase of this turn.
RD/VP02-JP002 Dairengekiryuu Dragias Burst / Great Multistrike Dragon Dragias Burst
LIGHT/Dragon/Maximum/Effect
Level 10 2000/0
MAXIMUM ATK 3500
You can Maximum Summon this card together with “Great Multistrike Dragon Dragias Burst [L]” and “Great Multistrike Dragon Dragias Burst [R]”.
[Requirement] Maximum Mode
[Continuous Effect] This card cannot be destroyed by your opponent’s Trap Card effects.
RD/VP02-JP003 Dairengekiryuu Dragias Burst [R] / Great Multistrike Dragon Dragias Burst[R]
LIGHT/Dragon/Maximum/Effect
Level 7 1500/0
[Requirement] Maximum Mode: Send 3 cards from your hand to the Graveyard.
[Effect] This turn, this card gains 1000 ATK, and if it attacks a Defense Position monster, inflict piercing battle damage (if the ATK of the attacking monster exceeds the DEF of the attack target, inflict the difference).