The main different choice is Banisher of the Radiance as Graveyard hate, even though it would just as equally hurt the Zombie Synchro deck itself
Extract it (if you are on mobile, use your file manager to reach your Downloads folder, then find the game cache file, keep pressing on the .zip file for about 1-2 seconds and a menu will appear, then select "Extract")
White Knight (T1, Ext, S, Block?) Rejoice all ye masses, for the White Knight has returned in time for the Onslaught block
Sudden SubstitutionSudden Substitution is a little trickier, but is also very flexible
Only Manawyddan fab Llyr can construct a monster to do enough damage to take out 1 of them
Of course, its no wonder they use hexproof cards