You get to keep your blocker and wont take any damage unless the attacker has trample if you choose to block with River Boa and then regenerate it
The holographic effect is built into the paper itself, giving the entire card a shimmering, rainbow-like finish
Thirsting Axes triggered ability checks whether the creature its attached to at the moment your end step begins dealt combat damage to a creature earlier in the turn
You may tap any two untapped artifacts you control, including artifact creatures that haven't been under your control continuously since the beginning of your most recent turn
When compared to the other Murders at Karlov Manor decks theyre pretty terrible actually
Fittingly, it was Teferi, Master of Time which really announced phasings full arrival, with cards like Guardian of Faith, March of Swirling Mist, Slip Out the Back and Clever Concealment soon to follow