While putting the same trigger on a 5-drop rather than a 3-drop is bound to make it weaker, drawing a card is still one of the best possible payoffs for doing something and you dont even need to build around G'raha Tia to make it good
Ultra Rares 18Full-art Mega ex & Trainer Supporter cards
In the worst-case scenario, it dies and you get to recast it as soon as you have a second zombie in play
When a card or effect is activated while you control an "Adventurer Token" (Quick Effect): You can shuffle this card into the Deck, and if you do, negate that activation, and if you do that, destroy that card
Or when he battled back a group of nefarious necromancers who had set their sights on resurrecting the bones of a rottenmouth viper
While I may have access to an anthem effect in the command zone, its always good to have redundant ways to close the game