I like to have my lifegain decks focus more on actually using that life for bigger spells or to generate card advantage, so I recommend looking at Erebos, God of the Dead and Phyrexian Processor
Odd-Eyes Revolution Dragon Odd-Eyes Revolution Dragon Dragon PendulumEffect UR Ultra Rare SE Secret Rare Related Cards View as Gallery View as List Miracle of the Supreme King X TRAP If you control "Supreme King Z-ARC": Activate 1 of these effects (but you can only use each effect of "Miracle of the Supreme King" once per turn)
Evenly Matched This is an insanely powerful board breaker that allows you to banish almost all cards your opponent controls face down by paying a small price of sacrificing your Battle Phase keep in mind you MUST control NO cards to activate it from your hand and the opponent will still have 1 card on field left (which is usually their best one)
4 Brightglass Gearhulk Borderless - $101.12 The borderless version of Brightglass Gearhulk is an absolute delight, and it's easy to see why it holds such a high value in Aetherdrift
2x Odd-Eyes Absolute Dragon: Main rank 7 for the deck that provides battle protection, and graveyard revival
Its an excellent choice for both defense and offense