You only play 1 prelate 1 egg 1 strong safe.
The first time you play undertaker, and it die, he will go back in your deck spawn an 8/8 and a 0/5 woth taunt.
The second time you play it, and it die, it will spawn two 8/8 and two 0/5 with taunt.
You can add lifesteal and taunt to your undertaker with the other card.
Remember to not play more death rattle.
























