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'Whenever one or more creatures you control deal combat damage to a player, you may sacrifice one of them. If you do, reveal cards from the top of your library...
'All creatures lose trample until end of turn. If a creature would deal combat damage to a creature this turn, it deals double that damage to that creature instead.
'Haste
Channel — {R}, Discard this card: Target creature gains haste until end of turn.
'Double the power of target creature until end of turn.
'[+2]: Create a 1/1 green Elf Druid creature token with "{T}: Add {G}." [−2]: Destroy target artifact or enchantment. [−6]: Draw a card for each green creature you control. Freyalise,...
'Target multicolored creature gains double strike until end of turn.
Draw a card.
'Choose one —
• Destroy target artifact.
• Target creature gets +1/+1 and gains trample until end of turn.
• Remove two time counters from target permanent or suspended card.
'Return target creature card from your graveyard to the battlefield.
'Choose one —
• Destroy target artifact.
• Target creature gets +1/+1 and gains trample until end of turn.
• Remove two time counters from target permanent or suspended card.
'Choose one —
• Destroy target artifact.
• Target creature gets +1/+1 and gains trample until end of turn.
• Remove two time counters from target permanent or suspended card.
'Creatures you control have trample. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)
'Flying
Whenever you cast a noncreature spell, create a 1/1 white Spirit creature token with flying.
Sacrifice a Spirit: Add {R}.