If its your main phase, there is an additional combat phase after this phase
Size Comparison: Pokmon Card vs Credit Card To help visualize the size, heres a side-by-side comparison with a standard credit card (3.37 2.125 inches): 2.5 3.5 in 3.37 2.125 in The card thickness is 0.01 inches or approximately 0.3 millimeters
Once Vaultborn Tyrant's second ability has triggered, lowering the power of the creature or removing it from the battlefield won't stop you from gaining life and drawing a card
A better alternative might be Rancor, which provides a similar power boost without the drawback of weakening the creature over time
If you gain control of another player's creature until end of turn and exert it, and then that player regains control of it, it will untap during that player's untap step
Wizards of the Coast announced on Wednesday that it was pulling the cards from its Magic library and banning them from the popular card game