You can easily Xyz Summon this card by using "Galaxy Queen's Light" to make any low Level monster you control Level 9. An easy example is using "Mystic Tomato" to Special Summon "Yubel" while "Level Eater" is in your Graveyard. Summon any monster with less than 9 stars, reduce the Level of "Yubel" to 9 to Special Summon "Level Eater", then use "Galaxy Queen's Light" to make them all Level 9 to Summon the "Number 92".
You can use "Overlay Regen" giving Heart-eartH Dragon another "Xyz Material" and then activate "Xyz Tribal" to prevent it from being destroyed by card effects that doesn't target.
Since its own effect can only revive this card once, try using other means to revive it as often as you can. The best way would be "Xyz Reborn" so that you may use this card's second effect more and further set up a great ATK increase for when you use its third effect.
You can use "Feelings Towards the Future" to Special Summon 3 monsters with different Levels from your Graveyard that include one Level 9 monster, then use "Galaxy Queen's Light" or "Star Light, Star Bright" to make all three Level 9 and Xyz Summon this card.