During your turn, spells your opponents cast cost more to cast and abilities your opponents activate cost more to activate unless they’re mana abilities.
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)
Because blockers are chosen all at once, you can't block with a creature with afterlife, wait for it to die, then block with the resulting Spirit tokens.
25-01-2019
wotc
Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keyword abilities are activated abilities and will have colons in their reminder text. An activated mana ability is one that produces mana as it resolves, not one that costs mana to activate. Triggered abilities (starting with "when," "whenever," or "at") are unaffected by Tithe Taker.
25-01-2019
wotc
An opponent's activated ability that costs no mana to activate will cost {1} plus its non-mana costs during your turn.
25-01-2019
wotc
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases (such as that of Tithe Taker's effect), then apply any cost reductions. The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
more to cast and abilities your opponents activate cost 
Aaron Miller2019-01-25
