160 HP is incredible, and higher than core EX cards like Mewtwo and Pikachu
Kroxa and Kunoros Kroxa and Kunoros requires intense self-mill to fuel its pseudo-escape effect, but a repeatable source of mana-free reanimation is well worth building around
Alternatively, in a pinch, you can also target an opponent, putting a land on top of their deck to stall their draw step, removing a dead creature in response to an Animate DeadAnimate Dead, or burying the important card they just retrieved with a Vampiric TutorVampiric Tutor or Lim-Dul's VaultLim-Dul's Vault or the top-deck they set up for Aminatou, the FateshifterAminatou, the Fateshifter
The idea is to use Moltres as a tank to withstand your opponents blows while also generating Fire Energy for Charizard ex
However, you can still play Timetwister in Magic's most popular casual format: Commander